April 2004 - openSUSE Security - openSUSE Mailing Lists

RE: [suse-security] System Update and Online Update
by Gao, Ruidong 16 Apr '04

16 Apr '04

Hi, excellent answer. Where is patch description file in disk. Is that bundled with fou4s or SUSE. Where can I find a template of it? I came to run fou4s and ended up with following error message: ---------------------------- linux:/home/ben # fou4s -u You are using ftp.gwdg.de and a business product, this will probably not work. Getting patch descriptions from http://ftp.gwdg.de/pub/linux/suse/ftp.suse.com/suse http://ftp.gwdg.de/pub/linux/suse/ftp.suse.com/suse/i386/update/SuSE-SLES/8…: 15:46:36 ERROR 404: Not Found. FINISHED --15:46:36-- Downloaded: 0 bytes in 0 files ---------------------------- What's wrong with it. Ben -----Original Message----- From: Armin Schoech [mailto:armin.schoech@web.de] Sent: 2004年4月16日 15:53 To: suse-security(a)suse.com Subject: RE: [suse-security] System Update and Online Update Hello, > To make it more clear for my last question, How can I find out if my > SUSE box has got specific vulnerability fixed so that I should not > bother to patch it. > --> you have to look at the changelog of the specific package. "rpm -q --changelog k_deflt | more" lists all changes and patches applied to the default kernel. The same can be used for any application e.g. "rpm -q --changelog openssh" > BTW, could this utility check patches for both application and > kernel? Could it install/uninstall application. > --> Fou4s will update all SuSE packages that you have installed on your system. It will not update packages which are not supported by SuSE (unless you write your own patch description files for these packages). Fou4s is used to update packages that are already installed, it is not meant for installing/uninstalling packages. Use "YaST" instead or the "rpm -U/-I" command from the commandline. Cheers, Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech(a)iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50 -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

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RE: [suse-security] System Update and Online Update
by Gao, Ruidong 16 Apr '04

16 Apr '04

Thanks. To make it more clear for my last question, How can I find out if my SUSE box has got specific vulnerability fixed so that I should not bother to patch it. I just installed fou4s and is reading man pages for usage help. BTW, could this utility check patches for both application and kernel? Could it install/uninstall application. ben -----Original Message----- From: Armin Schoech [mailto:armin.schoech@web.de] Sent: 2004年4月16日 15:14 To: suse-security(a)suse.com Subject: Re: [suse-security] System Update and Online Update Hi, > I come to be working on some stuff of patch on SUSE Linux. And I > wonder if you or someone else out there could recommend some site > or provide some patch artchitecture information on SUSE about how > vulnerabilities are detected and patched. > --> I don't really understand your question. There is no standard way of detecting a vulnerability. In general, someone out there finds a vulnerability either by looking through the source code (code-auditing) or by stumbling upon it when something doesn't work as expected or desired. Most often, the vulnerability is first released to the distributors (like SuSE) so they can fix it before it goes public and can be exploited. Regarding patches: SuSE prepares updated RPM-packages which are published on the SuSE FTP-servers. If you want to get notification about them, subscribe to "suse-security-announce". Minor updates are not announced but simply turn up on the FTP server. To keep your system up-to-date, monitor the FTP-server regularly or run YOU/fou4s regularly (at least once a week). HTH to answer your questions, Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech(a)iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50 -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

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RE: [SPAM] - Re: [suse-security] System Update and Online Update - Email found in subject
by Gao, Ruidong 16 Apr '04

16 Apr '04

Thanks, Armin. I come to be working on some stuff of patch on SUSE Linux. And I wonder if you or someone else out there could recommend some site or provide some patch artchitecture information on SUSE about how vulnerabilities are detected and patched. Ben -----Original Message----- From: Armin Schoech [mailto:armin.schoech@web.de] Sent: 2004年4月16日 14:48 To: suse-security(a)suse.com Subject: [SPAM] - Re: [suse-security] System Update and Online Update - Email found in subject Hi ! > Are there any CLI for patches and software packages maintenances besides > programs like yast? > --> Have a look at fou4s: http://fou4s.gaugusch.at/ Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech(a)iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50 -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

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System Update and Online Update
by Gao, Ruidong 16 Apr '04

16 Apr '04

Are there any CLI for patches and software packages maintenances besides programs like yast? Benjamin Gao

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Kernel source for SuSE 8.1 2.4.21-203
by William Cutshall 15 Apr '04

15 Apr '04

I just performed the YaST update to pick up the latest kernel patch. "uname -r" now reports "2.4.21-203-default". "rpm -qa | grep kernel" shows that I have "kernel-source-2.4.21-201" - which is what is on the SuSE FTP site. This mismatch between binary and source is preventing me from rebuilding my winmodem driver. Any suggestions on how I can resolve this? Thanks, Bill Cutshall wrcutshall(a)yahoo.com __________________________________ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html

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Re: [suse-security] Limits in /etc/group and useradd infinity loop
by Roland Hilkenbach 15 Apr '04

15 Apr '04

Am Mittwoch, 14. April 2004 18:22 schrieb Michael Ströder: > Maxim Cherniavsky wrote: > > I've found strange problems with useradd program. Suddenly useradd stops > > to work and begins to eat memory till system crash. > > Sad but true that there's absolutely no response from SuSE. :-( > > Which kernel are you using? > > Please check with: rpm -qf /boot/vmlinuz > > Ciao, Michael. Hello, I encountered the same problem: I was creating some useraccounts and out of a sudden useradd starts looping. Since then this happens reproducably even after reboot. Also groupadd behaves the same way. Now I have to create the accounts with vipw! My kernel version: k_athlon-2.4.21-202 Number of users: 600+ I even deleted some unused accounts to check if I hit some magic boundary in number of accounts. The sometimes infamous nscd is not running. Is there any workaround/fix for this? Ciao Roland

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ssh and X11 help
by calind＠earthlink.net 14 Apr '04

14 Apr '04

PRODUCT: SuSE Linux (I386) 9.0 I have a problem opening an Xterm window on my Suse linux machine (SL) after I ssh (with X11 forwarding) to a remote machine (RM). The display is set correctly, I see the xterm process running on the remote machine but the xterm does not pop up on my Suse linux machine (SL). In fact I lose keyboard input capabilities in the window where I typed 'xterm' and I only get it back one the connection times out. The IMPORTANT part is that I can accomplish the same thing from a Windows machine from the same network as my SL machine via putty (win ssh client) and Exceed. That indicates that the issue is with my local SUSE setup. The last line of the verbosed ouput is identical in both cases: "confirm x11" except on the Suse machine my xterm window doesn't pop up, on the windows machine it does. This leads me to believe that tI have a Suse ssh (maybe X) related problem. One other important issue: to reach to my remote machine I ssh twice: 1. Linux to remote account management machine (RAM). 2. RAM to RM ( where I finally want the xterm to run) In all cases the displays are set correctly. I also verified the xauth -list and my display is in the output and has a magic cookie. Please let me know if you have any ideeas about how to solve this problem. Any suggestions will be highly appreciated. Additional info below: ** my SUSE (SL) machine suse{cduma}41: ssh -V OpenSSH_3.7.1p2, SSH protocols 1.5/2.0, OpenSSL 0.9.7b 10 Apr 2003 ** the RAM machine (after the 1st ssh from SL to RAM) gatekeeper% ssh -V OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090607f gatekeeper% echo $DISPLAY gatekeeper:14.0 ** the RM machine (where I want to do the work and start the xterm) shaman{cduma}1: echo $DISPLAY shaman:10.0 ** the RC machine ouput after I start the Xterm shaman{cduma}2: debug2: client_check_window_change: changed debug2: channel 0: request window-change debug2: client_check_window_change: changed debug1: channel request 0: window-change shaman{cduma}4: xterm debug1: client_input_channel_open: ctype x11 rchan 3 win 65536 max 16384 debug1: client_request_x11: request from 155.157.86.16 42287 debug2: fd 7 setting O_NONBLOCK debug2: fd 7 is O_NONBLOCK debug1: channel 1: new [x11] debug1: confirm x11 debug1: client_input_channel_open: ctype x11 rchan 1 win 30000 max 1024 debug1: client_request_x11: request from 155.157.121.230 45345 debug1: fd 7 setting TCP_NODELAY debug1: fd 7 setting O_NONBLOCK debug2: fd 7 is O_NONBLOCK debug1: channel 1: new [x11] debug1: confirm x11 ** above is where the xterm window pops uo on my Windows machine, it doesn't on my SUSE machine ** below is the logging after connection TIMEOUT debug1: channel 0: free: client-session, nchannels 2 debug3: channel 0: status: The following connections are open: #0 client-session (t4 r0 i0/0 o0/0 fd 4/5) #1 x11 (t4 r3 i0/0 o0/0 fd 7/7) debug3: channel 0: close_fds r 4 w 5 e 6 debug1: channel 1: free: x11, nchannels 1 debug3: channel 1: status: The following connections are open: #1 x11 (t4 r3 i0/0 o0/0 fd 7/7) debug3: channel 1: close_fds r 7 w 7 e -1 Read from remote host gatekeeper.east.hitc.com: Connection timed out Connection to gatekeeper.east.hitc.com closed. debug1: Transferred: stdin 0, stdout 0, stderr 118 bytes in 1327.8 seconds debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.1 debug1: Exit status -1

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Limits in /etc/group and useradd infinity loop
by Maxim Cherniavsky 14 Apr '04

14 Apr '04

Hi all I've found strange problems with useradd program. Suddenly useradd stops to work and begins to eat memory till system crash. After some hours of experiments, I've found that I reached some strange limit in /etc/group file. I cannot add more than 85 users to one group. When adding 86'th user useradd stops to work, and due to strace, loops in open("/etc/passwd", O_RDONLY) = 4 fcntl64(4, F_GETFD) = 0 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 _llseek(4, 0, [0], SEEK_CUR) = 0 fstat64(4, {st_mode=S_IFREG|0644, st_size=6105, ...}) = 0 mmap2(NULL, 6105, PROT_READ, MAP_SHARED, 4, 0) = 0x4036f000 _llseek(4, 6105, [6105], SEEK_SET) = 0 fstat64(4, {st_mode=S_IFREG|0644, st_size=6105, ...}) = 0 munmap(0x4036f000, 6105) = 0 close(4) and so on. First question - what the limit of number of users in one group? And where I can read about this? Second question - why useradd works so terribly? Why it eats memory? It calls mmap2 and then munmap on the same address in a loop .... Third question - why kernel dont kill proccess which eats all of avaliable memory? On other systems swap pager must kill it! I'm using ----- cat /etc/SuSE-release SuSE Linux 9.0 (i586) VERSION = 9.0 ----- uname -a Linux Guantanamo 2.4.21-192-Guantanamo #1 Tue Apr 6 15:32:17 MSD 2004 ----- Thanx -- Best regards, Maxim Cherniavsky MTU-Intel, Internet Department mailto:maxim@mtu.ru

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SUSE Security Announcement: cvs (SuSE-SA:2004:008)
by krahmer＠suse.de 14 Apr '04

14 Apr '04

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: cvs Announcement-ID: SuSE-SA:2004:008 Date: Wed Apr 14 16:00:00 MEST 2004 Affected products: 8.0, 8.1, 8.2, 9.0 SuSE Firewall on CD 2 SuSE Linux Enterprise Server 7, 8 SLES 8 for IBM iSeries and IBM pSeries SuSE Linux Office Server UnitedLinux 1.0 Vulnerability Type: remote code execution Severity (1-10): 5 SUSE default package: No Cross References: Content of this advisory: 1) security vulnerability resolved: arbitrary file creation in cvs problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - neon - tcpdump - openssh - kdeprint/kdelibs3 - MPlayer - mailman - systat - apache2 - emil 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The Concurrent Versions System (CVS) offers tools which allow developers to share and maintain large software projects. During the analyzation of the CVS protocol and their implementation, the SuSE Security Team discovered a flaw within the handling of pathnames. Evil CVS servers could specify absolute pathnames during checkouts and updates, which allows to create arbitrary files with the permissions of the user invoking the CVS client. This could lead to a compromise of the system. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cvs-1.11.6-79.i586.rpm 392353d02948dee01fa98832841699be patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cvs-1.11.6-79.i586.pat… fd287ccde902d5a93ce54c141f4f888d source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/cvs-1.11.6-79.src.rpm f094e09f54e176747f7441d44c20e12c SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cvs-1.11.5-103.i586.rpm a690613adaf637365f8b99a91373f5cf patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cvs-1.11.5-103.i586.pa… 844400ec62905d78b9e196c311f49207 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/cvs-1.11.5-103.src.rpm 202d2afd939caff003fbe73f65977ee6 SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cvs-1.11.1p1-326.i586.… 90401ed5771c3570310c23efcd503bee patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cvs-1.11.1p1-326.i586.… 42335546a7937ccc0fc6173ba1697ed9 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cvs-1.11.1p1-326.src.rpm ca6cb008ba8004635f9892552ed3e569 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/cvs-1.11.1p1-326.i386.rpm b24bca587706433d0cfa81ae96822e81 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/cvs-1.11.1p1-326.i386.patch.… b5df706c6862ade002714607ba6027f6 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/cvs-1.11.1p1-326.src.rpm 26b4e34fb562fdccf33f35bfde16a403 Opteron x86_64 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cvs-1.11.6-78.x86_… dae12f94ea7eb35ed9b5172a8288d032 patch rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cvs-1.11.6-78.x86_… 07ca7acf86abd38e617a60e28dedfb0c source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/cvs-1.11.6-78.src.rpm 02d1e7f89a0f5372dc8a702032f4f4c2 ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - neon The neon package contained various format string vulnerabilities which have been fixed. New packages are available on our FTP servers. Maintained products do not contain the neon package and are therefore not affected. (CAN-2004-0179) - tcpdump The tcpdump program contains a remotely exploitable denial of service condition in its ISAKMP packet handling. New tcpdump packages are currently being tested and will soon be available on our FTP servers. - openssh The scp program which is part of the openssh package allowed evil servers to trick clients into creating arbitrary files with permissions of the user invoking scp. New packages are available on our FTP servers. - kdeprint/kdelibs3 The kdeprint system called the ghostscript program without the -dSAFER option. This has been fixed. New packages are available on our FTP servers. The package is named "kdelibs3". Maintained products are not affected. - MPlayer The mplayer program contained a buffer overflow while escaping large URLs. This has been fixed. New MPlayer packages are currently being tested and will be available soon on our FTP servers. - mailman The mailing list manager mailman can be tricked to deny service by remote attackers. (CAN-2003-0991) New packages are available on our FTP servers. - sysstat This update close two cases of insecure temporary file handling in the isag code. New packages are available on our FTP servers. - apache2 This update fixes a memory leak in the mod_ssl module of apache2 (CAN-2004-0113), a possible remote DoS attack on accessing rarely used listening ports (CAN-2004-0174), and a problem with unescaped special characters in log files that could present a security hazard for terminal emulators (CAN-2003-0020). New packages are available on our FTP servers. - emil The emil mail filter conatins buffer overflows and format-string bugs that can be exploited remotely if emil is used in conjunction with procmail, sendmail and alike. (CAN-2004-0152, CAN-2004-0153) New packages are available on our FTP servers. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SUSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security(a)suse.de) the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "build(a)suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security(a)suse.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe(a)suse.com>. suse-security-announce(a)suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe(a)suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info(a)suse.com> or <suse-security-faq(a)suse.com> respectively. ===================================================================== SUSE's security contact is <security(a)suse.com> or <security(a)suse.de>. The <security(a)suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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RE: [suse-security] List down?
by sematin＠mtn.co.ug 14 Apr '04

14 Apr '04

Must be the latter...:-D Noah. > -----Original Message----- > From: Andreas Bock [mailto:Andreas.Bock@nupis.de] > Sent: 14 April 2004 16:56 > To: suse-security(a)suse.com > Subject: [suse-security] List down? > > > Is the list down, or is everyone still in Easter vacation? > > Andreas > > -- > Check the headers for your unsubscription address > For additional commands, e-mail: suse-security-help(a)suse.com > Security-related bug reports go to security(a)suse.de, not here > >

3 2

AW: [suse-security] List down?
by dag Danczul Georg 14 Apr '04

14 Apr '04

yep.... :-) georg >-----Ursprüngliche Nachricht----- >Von: sematin(a)mtn.co.ug [mailto:sematin@mtn.co.ug] >Gesendet: Mittwoch, 14. April 2004 15:58 >An: Andreas.Bock(a)nupis.de; suse-security(a)suse.com >Betreff: RE: [suse-security] List down? > > > >Must be the latter...:-D > >Noah. > >> -----Original Message----- >> From: Andreas Bock [mailto:Andreas.Bock@nupis.de] >> Sent: 14 April 2004 16:56 >> To: suse-security(a)suse.com >> Subject: [suse-security] List down? >> >> >> Is the list down, or is everyone still in Easter vacation? >> >> Andreas >> >> -- >> Check the headers for your unsubscription address >> For additional commands, e-mail: suse-security-help(a)suse.com >> Security-related bug reports go to security(a)suse.de, not here >> >> > >-- >Check the headers for your unsubscription address >For additional commands, e-mail: suse-security-help(a)suse.com >Security-related bug reports go to security(a)suse.de, not here > >

1 0

List down?
by Andreas Bock 14 Apr '04

14 Apr '04

Is the list down, or is everyone still in Easter vacation? Andreas

1 0

Newbie TCP Wrappers
by Paul Dean 12 Apr '04

12 Apr '04

Hi all, I'm still learning about Linux and trying to make my home network reasonably secure. I have a network with a Red Hat 8 server which I am trying to replace with SuSE 9. On the Red Hat server I had iptables, portsentry, tripwire and TCP wrappers running. Where can I find information on setting up tcp wrappers with SuSE ? I've set up my hosts.allow and hosts.deny. Is there anything else I need to do ? Any views on Portsentry? It doesn't seem to be on the Psionic site. Is it still supported ? Thanks a lot Paul

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RE: [suse-security] Linux as a commercial alternative to a Cisco router
by sematin＠mtn.co.ug 12 Apr '04

12 Apr '04

Which can be found at http://open.com.au/radiator Noah. > -----Original Message----- > From: Mark Tinka [mailto:aknit444@yahoo.com] > Sent: 09 April 2004 16:34 > To: Lars Ellenberg; suse-security(a)suse.com > Subject: Re: [suse-security] Linux as a commercial > alternative to a Cisco router > > > --- Lars Ellenberg <l.g.e(a)web.de> wrote: > > / 2004-04-07 18:21:25 +0100 > > > I think I have seen this setup somewhere. Probably > > needs to use some > > pam module authenticating against radius. Don't > > know exactly how to > > configure this, though. > > u might want to look at Radiator RADIUS.. it supports > a ton of applications and is easily configurable for > authentication against your MySQL database.. no PAM modules > required.. > > > > > Lars Ellenberg > > Regards, > > Mark. > > __________________________________ > Do you Yahoo!? > Yahoo! Small Business $15K Web Design Giveaway > http://promotions.yahoo.com/design_giveaway/ > > -- > Check the headers for your unsubscription address > For additional commands, e-mail: suse-security-help(a)suse.com > Security-related bug reports go to security(a)suse.de, not here > >

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IP6
by Ivan Yosifov 09 Apr '04

09 Apr '04

Hello All, Does SuSEfirewall work with ip6, if not will it anytime soon? When entering IP6 addrs in vars like FW_TRUSTED_NETS in /etc/sysconfig/SuSEfirewall2 i get error messages on firewall startup saying iptables does not recognize them.Also when I ping the ip6 localhost with firewall running I get bivus@localhost:~> ping6 ::1 PING ::1(::1) 56 data bytes ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ... When the firewall is not running ping6 works ok.What can I do about this ? Ivan Yosifov.

3 3

Linux as a commercial alternative to a Cisco router
by Carl Peto 09 Apr '04

09 Apr '04

I am planning to set up ADSL access in to our group of servers at a secure location. The ISPs we have been in touch with will give us a 100Mbit ethernet VLAN to their network so that the L2TP connections from our clients' DSL routers can terminate in our equipment. We are aware that Cisco 3600 series routers can do this but they cost something like £10,000 !! We are interested in getting an alternative running. I suggested that we get a reasonably solid (e.g. Dell) 1U server with SuSE Linux server or SLES and two fast ethernet cards. The questions are these... 1) Can one of the SuSE Linux products (doesn't matter which, we can afford it) act as a fully fledged router? 2) Can it do VLANs over ethernet? 3) Can it act as a LNS for an L2TP circuit, such as those from DSL routers, authenticating against a RADIUS server? 4) Has anyone done anything like this before? It's been surprisingly hard to answer these questions, Googling, etc.! Thanks and Regards, Carl Peto

6 6

RE: [suse-security] Multiple Internal Networks not Routing
by sematin＠mtn.co.ug 07 Apr '04

07 Apr '04

> -----Original Message----- > From: Philipp Rusch [mailto:philipp.rusch@rusch-edv.de] > Sent: 07 April 2004 10:50 > To: suse-security(a)suse.com > Subject: Re: [suse-security] Multiple Internal Networks not Routing > >> In your case, if you are still free to choose your network > adresses > >> and don't have more than 254 hosts, I would strongly > recommend that > >> you go for something like 192.168.1.x/24 on eth1 and > 192.168.2.y/24 > >> on eth2 or if you have more hosts, go for 172.16.1.x/16 on eth1 if > >> there is the majority of your hosts and take > 192.168.2.x/24 for eth2. You do not necessarily have to stick to the old "class" boundaries. You can choose to use only the 172.16.x.x/16 range and then sub divide it into smaller or bigger parts for each network using variable length subnet masks like the /20 /19 /22 etc which give you more hosts without restricting you to the old class boundaries which is exactly what CIDR was meant to solve. ( CIDR= Classless InterDomain Routing) Noah.

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RE: [suse-security] Multiple Internal Networks not Routing
by sematin＠mtn.co.ug 07 Apr '04

07 Apr '04

> -----Original Message----- > From: Philipp Rusch [mailto:philipp.rusch@rusch-edv.de] > Sent: 07 April 2004 11:17 > To: suse-security(a)suse.com > Subject: Re: [suse-security] Multiple Internal Networks not Routing > > > Yes, of course, these classes were never meant to be fix. > But I doubt that M$ clients always stick to the rules when it > comes to routing .... Have you ever tried to "convince" a w2k > DHCP server to hand out "non-standard" ip adresses/masks? Had > a server doing it correctly in the morning and after several > hours it did something else but not what was defined. Have > several experiences like this, never had a problem with > unusual ip/mask combinations with cisco routers for instance. > > Just my 2 cents, Philipp For the record, I do have a win2k DHCP server doing exactly that and it is perfoming quite ok. Maybe you need to apply some "service packs" and any other relevant patches. Of course a linux DHCP server would be preferable if you do not have "political reasons" for running M$ products. ( where political= management) Noah.

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Re: [suse-security] Multiple Internal Networks not Routing
by Philipp Rusch 07 Apr '04

07 Apr '04

Jason, Ok, we are one step further ! To clarify: (this has been defined like that, there is no obvious technical reason for that, ok there are some reasons, but that would lead us too far) there are classes of IP-networks: A-class : mask /8 B-class : mask /16 C-class : mask /24 which some special adresses reserved for "private use", which means, these are "unrouteable" adresses in terms of internet routes, that's the reason for NAT, for instance. OK, 10.a.b.c "normally" has to have a /8 mask (type A class) you can divide this huge network of 16*16*16 hosts in smaller nets using a /16 or a /24 mask for instance. 172.16.m.n "normally" has to have a /16 mask (type B class) but the same concept of breaking it down into parts applies as above, you are free to do so. 192.168.x.y "normally" has to have a /24 mask (type C class) which implies that you choose the "x" and then this part of the network address is fix for your setup. The advantage of having a 10.a.b.c/8 network instead of a 192.168.x.y/24 is that you can have more hosts belonging to the *same" network without the need to route. In your case, if you are still free to choose your network adresses and don't have more than 254 hosts, I would strongly recommend that you go for something like 192.168.1.x/24 on eth1 and 192.168.2.y/24 on eth2 or if you have more hosts, go for 172.16.1.x/16 on eth1 if there is the majority of your hosts and take 192.168.2.x/24 for eth2. Next question: what are the routing entries of your Windows PCs? They have to know about the other net as well ! Post a route print example output of both networks back here. Regards, Philipp Jason Dobbs schrieb: > Ok here is the tracert data: > > From a windows PC (192.168.65.228) to a windows PC (10.62.56.8) > ----------------------------------------------------------------- > 1 <1 ms <1 ms <1 ms 192.168.66.252 > 2 * * * Request timed out. > 3 * * * Request timed out. > 4 * * * Request timed out. > 5 * * * Request timed out. > > > > /var/log/messages > ----------------------------------------------------------------- > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1245 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1530 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24065 ] > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1246 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1531 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24321 ] > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1247 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1532 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24577 ] > Apr 6 04:22:48 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1534 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=24833 > Apr 6 04:22:52 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1577 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25089 > Apr 6 04:22:56 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1579 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25345 > Apr 6 04:23:01 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1581 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25601 > Apr 6 04:23:05 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1589 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25857 > Apr 6 04:23:10 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1591 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26113 > Apr 6 04:23:14 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1593 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26369 > Apr 6 04:23:19 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1597 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26625 > Apr 6 04:23:23 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1599 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26881 > Apr 6 04:23:28 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1601 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27137 > Apr 6 04:23:32 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1605 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27393 > Apr 6 04:23:37 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1607 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27649 > Apr 6 04:23:41 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=5 ID=1609 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27905 > > > 192.168.66.252 is the gateway for the 192.168.0.0/16 network. > 10.62.56.252 is the gateway for the 10.62.56.0/24 network. > > as far as your note on /16 and /24 ... maybe I have them backwards! I > though 192.168.0.0 was /16 and 10.62.56.0 was /24!!!!!! <-- Please > clearify this! > > Thank You, > Jason Dobbs . IT Manager > Westin Casuarina Casino Las Vegas > > > > Philipp Rusch wrote: > >> Hello Jason, >> OK, I see ... >> what about my note about /16 and /24 masks ? >> do you *have* to do it like that ? >> >> When you leave both FW_MASQ_NETS="" (empty) >> and FW_FORWARD="" (empty) >> and do a traceroute from a host on eth1 to a host on eth2 >> or vice versa, what do you see in the firewall logs in >> /var/logs/messages ? >> >> Lets get this to work, Philipp >> >> Jason Dobbs schrieb: >> >>> Kernel IP routing table >>> Destination Gateway Genmask Flags Metric Ref >>> Use Iface >>> <public ip> 0.0.0.0 255.255.255.128 U 0 >>> 0 0 eth0 >>> 10.62.56.0 0.0.0.0 255.255.255.0 U 0 >>> 0 0 eth2 >>> 192.168.0.0 0.0.0.0 255.255.0.0 U 0 >>> 0 0 eth1 >>> 0.0.0.0 <public gw> 0.0.0.0 UG 0 0 >>> 0 eth0 >>> >>> ip forwarding is turned on in yast! >>> >>> Thank You, >>> Jason Dobbs . IT Manager >>> Westin Casuarina Casino Las Vegas >>> p. 702.836.5939 f. 270.913.7462 >>> mailto: jdobbs(a)casuarinacasino.com >>> >>> >>> >>> Philipp Rusch wrote: >>> >>>> Hi Jason what is your routing table looking like ? >>>> post route -nv back here >>>> are you routing at all ? (set ip_forward=yes in YAST) >>>> >>>> other comments inline ... >>>> >>>> Jason Dobbs schrieb: >>>> >>>>> --SNIP --- >>>> >>>> >>>> >>>> >>>> >>>>> FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail >>>>> server ip>/32 10.62.56.0/24,<mail server ip>/32" >>>> >>>> >>>> >>>> >>>> >>>> ----------------------------------^ this >>>> ----------------------------------and this ^ is redundant, >>>> 192.168.65.224/27 is completely contained >>>> in 192.168.0.0./16 network, which means all 192.168."something" >>>> nets ... >>>> you know that normally 192.168.x.y net is a /24-type network and a >>>> 10.x.y.z has a /16 type mask ?? >>>> >>>> --SNIP-- >>>> >>>>> FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 >>>>> 10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ >>>>> 192.168.0.0/16,10.62.56.0/24,udp,1:65535 >>>>> 10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ >>>>> 192.168.0.0/16,10.62.56.0/24,icmp >>>>> 10.62.56.0/24,192.168.0.0/16,icmp" >>>>> FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 >>>>> 0/0,192.168.65.227,tcp,5900 \ >>>>> 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" >>>> >>>> >>>> >>>> >>>> >>>> what are you trying to do here ? >>>> If routing just doesn't work then forwarding doesn't help that much >>>> ... >>>> >>>> I think something different is causing your troubles than missing >>>> entries here, >>>> seems you did to much of a work, it is normally quite simple, what >>>> you try to do :-) >>>> >>>> Regards from Germany, Philipp >>>> >>>> >>> >>> >> >> > >

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Re: AW: AW: [suse-security] Multiple Internal Networks not Routing
by Jason Dobbs 07 Apr '04

07 Apr '04

Robert, Yeah the GW is correct for both networks and I can ping both GWs. I can even ping the far side of the box (i.e. - On 192.168.65.228 I can ping it's Gw of 192.168.66.252 and the 10.62.56.x GW of 10.62.56.252. I however can't ping any other 10.62.56.x address. The same goes for any traffic from the 10.62.56.x network to the 192.168.x.x network. 192.168.65.228 Route Print Dump ------------------------------------------------------ Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.66.252 192.168.65.228 20 10.62.56.0 255.255.255.0 192.168.66.252 192.168.65.228 1 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 192.168.0.0 255.255.0.0 192.168.65.228 192.168.65.228 20 192.168.65.228 255.255.255.255 127.0.0.1 127.0.0.1 20 192.168.65.255 255.255.255.255 192.168.65.228 192.168.65.228 20 224.0.0.0 240.0.0.0 192.168.65.228 192.168.65.228 20 255.255.255.255 255.255.255.255 192.168.65.228 192.168.65.228 1 Default Gateway: 192.168.66.252 =========================================================================== Persistent Routes: None ***NOTE*** ---- I added the 10.62.56.0 route hoping to produce results. This however did not work either and has been removed. Thank You, Jason Dobbs . IT Manager Westin Casuarina Casino Las Vegas Rasp, Robert wrote: >Jason, > >Routing on the Router is looking good, i think... >Is the Default-Gateway set correct on the workstations ? >Can you Ping this IP ??? > >Can i have the routingtable from your router and the IP's of the Networkcards. >Can i have a Routing-Table from one client on each Network (Windows --> route print) > >CU >Robert > > >-----Ursprüngliche Nachricht----- >Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] >Gesendet: Dienstag, 6. April 2004 22:37 >An: suse-security(a)suse.com >Betreff: Re: AW: [suse-security] Multiple Internal Networks not Routing > > >Robert, > >ETH1 Dump >------------------------------------------ >tcpdump: listening on eth1 >05:33:19.653787 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:24.707194 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:30.207866 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:35.708547 192.168.65.228 > 10.62.56.8: icmp: echo request > >4 packets received by filter >0 packets dropped by kernel > > >ETH2 Dump >------------------------------------------- >tcpdump -pni eth2 icmp >tcpdump: listening on eth2 >05:33:19.654447 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:24.707232 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:30.207911 192.168.65.228 > 10.62.56.8: icmp: echo request >05:33:35.708586 192.168.65.228 > 10.62.56.8: icmp: echo request > >4 packets received by filter >0 packets dropped by kernel > > >192.168.65.228 trying to ping 10.62.56.8 >--------------------------------------------------- >Pinging 10.62.56.8 with 32 bytes of data: > >Request timed out. >Request timed out. >Request timed out. >Request timed out. > >Ping statistics for 10.62.56.8: > Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), > > > > >IP-Forwarding >---------------------------------------- >cat /proc/sys/net/ipv4/ip_forward <enter> >1 > > > >Thank You, >Jason Dobbs . IT Manager >Westin Casuarina Casino Las Vegas > > > >Rasp, Robert wrote: > > > >>Hello, >> >>i had this problem by my self... i hate routing sometimes ;-) >>Is IP-Forwaring enabled (cat /proc/sys/net/ipv4/ip_forward) >>Try this: >>Open two Shell's and start "tcpdump -pni eth1 icmp" on one Shell and >>"tcpdump -pni eth2 icmp" on the other. >>Try the Ping again and watch the results... >> >>CU >>Robert >> >> >>-----Ursprüngliche Nachricht----- >>Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] >>Gesendet: Dienstag, 6. April 2004 21:49 >>An: Rasp, Robert >>Betreff: Re: *****list-suse***** AW: [suse-security] Multiple Internal >>Networks not Routing >> >> >>Robert, >> >>I took the firewall script down and tried a ping from 192.168.65.228 to >>10.62.56.8 and got the same results, request timed out. >> >>Thank You, >>Jason Dobbs . IT Manager >>Westin Casuarina Casino Las Vegas >> >> >> >>Rasp, Robert wrote: >> >> >> >> >> >>>Hello, >>> >>>if i had this problem, i try it without firewall first.... >>>Then you can be sure your routing is ok. >>>It may be better to stay offline while the firewallscript isn't runnung :-) >>> >>>CU >>>Robert >>> >>>-----Ursprüngliche Nachricht----- >>>Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] >>>Gesendet: Dienstag, 6. April 2004 17:18 >>>An: suse-security(a)suse.com >>>Betreff: [suse-security] Multiple Internal Networks not Routing >>> >>> >>>Hi, >>> >>>Hoping someone can point out my mistake here! I have SuSE 9.0 running >>>with 3 NICS (eth0=internet, eth1=192.168.0.0/16, and >>>eth2=10.62.56.0/24). Everything with the internet is working great. The >>>problem is routing traffic between eth1 and eth2. I've set both networks >>>as trusted, set FW_FORWARD, and enabled FW_ALLOW_CLASS_ROUTING. Nothing >>>has seemed to work. Posted is also a copy of my >>>/etc/sysconfig/SuSEfirewall2. I'd like to allow all traffic between >>>these 2 networks. >>> >>>Any ideas? >>> >>>------------------------------------------------------------------- >>>FW_QUICKMODE="no" >>>FW_DEV_EXT="eth0" >>>FW_DEV_INT="eth1 eth2" >>>FW_DEV_DMZ="" >>>FW_ROUTE="yes" >>>FW_MASQUERADE="yes" >>>FW_MASQ_DEV="$FW_DEV_EXT" >>>FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail >>>server ip>/32 10.62.56.0/24,<mail server ip>/32" >>>FW_PROTECT_FROM_INTERNAL="no" >>>FW_AUTOPROTECT_SERVICES="yes" >>>FW_SERVICES_EXT_TCP="http https ssh" >>>FW_SERVICES_EXT_IP="" >>>FW_SERVICES_DMZ_TCP="" >>>FW_SERVICES_DMZ_IP="" >>>FW_SERVICES_INT_TCP="" >>>FW_SERVICES_INT_UDP="" >>>FW_SERVICES_INT_IP="" >>>FW_SERVICES_QUICK_TCP="" >>>FW_SERVICES_QUICK_UDP="" >>>FW_SERVICES_QUICK_IP="" >>>FW_TRUSTED_NETS="192.168.0.0/16 10.62.56.0/24" >>>FW_ALLOW_INCOMING_HIGHPORTS_TCP="no" >>>FW_ALLOW_INCOMING_HIGHPORTS_UDP="DNS" >>>FW_SERVICE_AUTODETECT="yes" >>>FW_SERVICE_DNS="yes" >>>FW_SERVICE_DHCLIENT="no" >>>FW_SERVICE_DHCPD="yes" >>>FW_SERVICE_SQUID="yes" >>>FW_SERVICE_SAMBA="no" >>>FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 >>>10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ >>> 192.168.0.0/16,10.62.56.0/24,udp,1:65535 >>>10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ >>> 192.168.0.0/16,10.62.56.0/24,icmp 10.62.56.0/24,192.168.0.0/16,icmp" >>>FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 0/0,192.168.65.227,tcp,5900 \ >>> 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" >>>FW_REDIRECT="" >>>FW_LOG_DROP_CRIT="yes" >>>FW_LOG_DROP_ALL="yes" # Jason Dobbs >>>FW_LOG_ACCEPT_CRIT="yes" >>>FW_LOG_ACCEPT_ALL="yes" # Jason Dobbs >>>FW_LOG="--log-level warning --log-tcp-options --log-ip-option >>>--log-prefix SuSE-FW" >>>FW_KERNEL_SECURITY="yes" >>>FW_STOP_KEEP_ROUTING_STATE="no" >>>FW_ALLOW_PING_FW="yes" >>>FW_ALLOW_PING_DMZ="no" >>>FW_ALLOW_PING_EXT="no" >>>FW_ALLOW_FW_TRACEROUTE="yes" >>>FW_ALLOW_FW_SOURCEQUENCH="yes" >>>FW_ALLOW_FW_BROADCAST="no" >>>FW_IGNORE_FW_BROADCAST="yes" >>>FW_ALLOW_CLASS_ROUTING="yes" >>>FW_CUSTOMRULES="" >>>FW_REJECT="no" >>>FW_HTB_TUNE_DEV="" >>>----------------------------------------------------------------------------------- >>> >>> >>> >>> >>> >>> >>> >> >> >> >> >> > > > >

3 4

RPM Updates
by Gustavo Castro Puig 06 Apr '04

06 Apr '04

Hi, I'm trying to reinstall a package manually with rpm in SuSE 9.0 and some config files doesn't get updated. I tried with --force, --replacefiles and so on, and that files doesn't get updated anyway. I don't know if it's a security issue or something I have to worry about... Do you know how to *really* reinstall a complete package (including configuration files)? Thanks in advance. Regards, Gustavo.

3 2

AW: [suse-security] Multiple Internal Networks not Routing
by Rasp, Robert 06 Apr '04

06 Apr '04

Hello Philipp, i'm sorry but i think your wrong. You'r right about the network-calsses but yout can of course route a network with a /12 Network to a /19 Notwork.. and so an I Route 5 /19 Networks with 3 /16 Networks in every direction over one Router. As long as they ar not in one Subnet.... For routing-roules ist is possibile to route 192.168.0.0/16 to 10.62.56.0/24 All hosts hav to use a defaultroute to "the Networkcard" of ther Router. If the Router has 192.168.0.1 on eth1 and 10.62.56.1 on eth2 then the default route an the 10.* Net ist 10.62.56.1 and on 192.168.* it ist 192.168.0.1... If you have ip-forwarding enabled, it will work. But have al look at the other Routingrouls on the Router and on the Workstations. CU Robert -----Ursprüngliche Nachricht----- Von: Philipp Rusch [mailto:philipp.rusch@rusch-edv.de] Gesendet: Dienstag, 6. April 2004 22:28 An: suse-security(a)suse.com Betreff: Re: [suse-security] Multiple Internal Networks not Routing Jason, Ok, we are one step further ! To clarify: (this has been defined like that, there is no obvious technical reason for that, ok there are some reasons, but that would lead us too far) there are classes of IP-networks: A-class : mask /8 B-class : mask /16 C-class : mask /24 which some special adresses reserved for "private use", which means, these are "unrouteable" adresses in terms of internet routes, that's the reason for NAT, for instance. OK, 10.a.b.c "normally" has to have a /8 mask (type A class) you can divide this huge network of 16*16*16 hosts in smaller nets using a /16 or a /24 mask for instance. 172.16.m.n "normally" has to have a /16 mask (type B class) but the same concept of breaking it down into parts applies as above, you are free to do so. 192.168.x.y "normally" has to have a /24 mask (type C class) which implies that you choose the "x" and then this part of the network address is fix for your setup. The advantage of having a 10.a.b.c/8 network instead of a 192.168.x.y/24 is that you can have more hosts belonging to the *same" network without the need to route. In your case, if you are still free to choose your network adresses and don't have more than 254 hosts, I would strongly recommend that you go for something like 192.168.1.x/24 on eth1 and 192.168.2.y/24 on eth2 or if you have more hosts, go for 172.16.1.x/16 on eth1 if there is the majority of your hosts and take 192.168.2.x/24 for eth2. Next question: what are the routing entries of your Windows PCs? They have to know about the other net as well ! Post a route print example output of both networks back here. Regards, Philipp Jason Dobbs schrieb: > Ok here is the tracert data: > > From a windows PC (192.168.65.228) to a windows PC (10.62.56.8) > ----------------------------------------------------------------- > 1 <1 ms <1 ms <1 ms 192.168.66.252 > 2 * * * Request timed out. > 3 * * * Request timed out. > 4 * * * Request timed out. > 5 * * * Request timed out. > > > > /var/log/messages > ----------------------------------------------------------------- > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1245 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1530 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24065 ] > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1246 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1531 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24321 ] > Apr 6 04:22:47 terminator kernel: SuSE-FW-TRACEROUTE-ATTEMPT IN= > OUT=eth1 SRC=192.168.66.252 DST=192.168.65.228 LEN=120 TOS=0x00 > PREC=0xC0 TTL=64 ID=1247 PROTO=ICMP TYPE=11 CODE=0 [SRC=192.168.65.228 > DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 TTL=1 ID=1532 PROTO=ICMP > TYPE=8 CODE=0 ID=512 SEQ=24577 ] > Apr 6 04:22:48 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1534 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=24833 > Apr 6 04:22:52 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1577 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25089 > Apr 6 04:22:56 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=1 ID=1579 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25345 > Apr 6 04:23:01 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1581 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25601 > Apr 6 04:23:05 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1589 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=25857 > Apr 6 04:23:10 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=2 ID=1591 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26113 > Apr 6 04:23:14 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1593 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26369 > Apr 6 04:23:19 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1597 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26625 > Apr 6 04:23:23 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=3 ID=1599 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=26881 > Apr 6 04:23:28 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1601 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27137 > Apr 6 04:23:32 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1605 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27393 > Apr 6 04:23:37 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=4 ID=1607 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27649 > Apr 6 04:23:41 terminator kernel: SuSE-FW-ACCEPT-CLASS IN=eth1 > OUT=eth2 SRC=192.168.65.228 DST=10.62.56.8 LEN=92 TOS=0x00 PREC=0x00 > TTL=5 ID=1609 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=27905 > > > 192.168.66.252 is the gateway for the 192.168.0.0/16 network. > 10.62.56.252 is the gateway for the 10.62.56.0/24 network. > > as far as your note on /16 and /24 ... maybe I have them backwards! I > though 192.168.0.0 was /16 and 10.62.56.0 was /24!!!!!! <-- Please > clearify this! > > Thank You, > Jason Dobbs . IT Manager > Westin Casuarina Casino Las Vegas > > > > Philipp Rusch wrote: > >> Hello Jason, >> OK, I see ... >> what about my note about /16 and /24 masks ? >> do you *have* to do it like that ? >> >> When you leave both FW_MASQ_NETS="" (empty) >> and FW_FORWARD="" (empty) >> and do a traceroute from a host on eth1 to a host on eth2 >> or vice versa, what do you see in the firewall logs in >> /var/logs/messages ? >> >> Lets get this to work, Philipp >> >> Jason Dobbs schrieb: >> >>> Kernel IP routing table >>> Destination Gateway Genmask Flags Metric Ref >>> Use Iface >>> <public ip> 0.0.0.0 255.255.255.128 U 0 >>> 0 0 eth0 >>> 10.62.56.0 0.0.0.0 255.255.255.0 U 0 >>> 0 0 eth2 >>> 192.168.0.0 0.0.0.0 255.255.0.0 U 0 >>> 0 0 eth1 >>> 0.0.0.0 <public gw> 0.0.0.0 UG 0 0 >>> 0 eth0 >>> >>> ip forwarding is turned on in yast! >>> >>> Thank You, >>> Jason Dobbs . IT Manager >>> Westin Casuarina Casino Las Vegas >>> p. 702.836.5939 f. 270.913.7462 >>> mailto: jdobbs(a)casuarinacasino.com >>> >>> >>> >>> Philipp Rusch wrote: >>> >>>> Hi Jason what is your routing table looking like ? >>>> post route -nv back here >>>> are you routing at all ? (set ip_forward=yes in YAST) >>>> >>>> other comments inline ... >>>> >>>> Jason Dobbs schrieb: >>>> >>>>> --SNIP --- >>>> >>>> >>>> >>>> >>>> >>>>> FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail >>>>> server ip>/32 10.62.56.0/24,<mail server ip>/32" >>>> >>>> >>>> >>>> >>>> >>>> ----------------------------------^ this >>>> ----------------------------------and this ^ is redundant, >>>> 192.168.65.224/27 is completely contained >>>> in 192.168.0.0./16 network, which means all 192.168."something" >>>> nets ... >>>> you know that normally 192.168.x.y net is a /24-type network and a >>>> 10.x.y.z has a /16 type mask ?? >>>> >>>> --SNIP-- >>>> >>>>> FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 >>>>> 10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ >>>>> 192.168.0.0/16,10.62.56.0/24,udp,1:65535 >>>>> 10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ >>>>> 192.168.0.0/16,10.62.56.0/24,icmp >>>>> 10.62.56.0/24,192.168.0.0/16,icmp" >>>>> FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 >>>>> 0/0,192.168.65.227,tcp,5900 \ >>>>> 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" >>>> >>>> >>>> >>>> >>>> >>>> what are you trying to do here ? >>>> If routing just doesn't work then forwarding doesn't help that much >>>> ... >>>> >>>> I think something different is causing your troubles than missing >>>> entries here, >>>> seems you did to much of a work, it is normally quite simple, what >>>> you try to do :-) >>>> >>>> Regards from Germany, Philipp >>>> >>>> >>> >>> >> >> > > -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

3 2

Re: AW: [suse-security] Multiple Internal Networks not Routing
by Jason Dobbs 06 Apr '04

06 Apr '04

Robert, ETH1 Dump ------------------------------------------ tcpdump: listening on eth1 05:33:19.653787 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:24.707194 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:30.207866 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:35.708547 192.168.65.228 > 10.62.56.8: icmp: echo request 4 packets received by filter 0 packets dropped by kernel ETH2 Dump ------------------------------------------- tcpdump -pni eth2 icmp tcpdump: listening on eth2 05:33:19.654447 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:24.707232 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:30.207911 192.168.65.228 > 10.62.56.8: icmp: echo request 05:33:35.708586 192.168.65.228 > 10.62.56.8: icmp: echo request 4 packets received by filter 0 packets dropped by kernel 192.168.65.228 trying to ping 10.62.56.8 --------------------------------------------------- Pinging 10.62.56.8 with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for 10.62.56.8: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), IP-Forwarding ---------------------------------------- cat /proc/sys/net/ipv4/ip_forward <enter> 1 Thank You, Jason Dobbs . IT Manager Westin Casuarina Casino Las Vegas Rasp, Robert wrote: >Hello, > >i had this problem by my self... i hate routing sometimes ;-) >Is IP-Forwaring enabled (cat /proc/sys/net/ipv4/ip_forward) >Try this: >Open two Shell's and start "tcpdump -pni eth1 icmp" on one Shell and >"tcpdump -pni eth2 icmp" on the other. >Try the Ping again and watch the results... > >CU >Robert > > >-----Ursprüngliche Nachricht----- >Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] >Gesendet: Dienstag, 6. April 2004 21:49 >An: Rasp, Robert >Betreff: Re: *****list-suse***** AW: [suse-security] Multiple Internal >Networks not Routing > > >Robert, > >I took the firewall script down and tried a ping from 192.168.65.228 to >10.62.56.8 and got the same results, request timed out. > >Thank You, >Jason Dobbs . IT Manager >Westin Casuarina Casino Las Vegas > > > >Rasp, Robert wrote: > > > >>Hello, >> >>if i had this problem, i try it without firewall first.... >>Then you can be sure your routing is ok. >>It may be better to stay offline while the firewallscript isn't runnung :-) >> >>CU >>Robert >> >>-----Ursprüngliche Nachricht----- >>Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] >>Gesendet: Dienstag, 6. April 2004 17:18 >>An: suse-security(a)suse.com >>Betreff: [suse-security] Multiple Internal Networks not Routing >> >> >>Hi, >> >>Hoping someone can point out my mistake here! I have SuSE 9.0 running >>with 3 NICS (eth0=internet, eth1=192.168.0.0/16, and >>eth2=10.62.56.0/24). Everything with the internet is working great. The >>problem is routing traffic between eth1 and eth2. I've set both networks >>as trusted, set FW_FORWARD, and enabled FW_ALLOW_CLASS_ROUTING. Nothing >>has seemed to work. Posted is also a copy of my >>/etc/sysconfig/SuSEfirewall2. I'd like to allow all traffic between >>these 2 networks. >> >>Any ideas? >> >>------------------------------------------------------------------- >>FW_QUICKMODE="no" >>FW_DEV_EXT="eth0" >>FW_DEV_INT="eth1 eth2" >>FW_DEV_DMZ="" >>FW_ROUTE="yes" >>FW_MASQUERADE="yes" >>FW_MASQ_DEV="$FW_DEV_EXT" >>FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail >>server ip>/32 10.62.56.0/24,<mail server ip>/32" >>FW_PROTECT_FROM_INTERNAL="no" >>FW_AUTOPROTECT_SERVICES="yes" >>FW_SERVICES_EXT_TCP="http https ssh" >>FW_SERVICES_EXT_IP="" >>FW_SERVICES_DMZ_TCP="" >>FW_SERVICES_DMZ_IP="" >>FW_SERVICES_INT_TCP="" >>FW_SERVICES_INT_UDP="" >>FW_SERVICES_INT_IP="" >>FW_SERVICES_QUICK_TCP="" >>FW_SERVICES_QUICK_UDP="" >>FW_SERVICES_QUICK_IP="" >>FW_TRUSTED_NETS="192.168.0.0/16 10.62.56.0/24" >>FW_ALLOW_INCOMING_HIGHPORTS_TCP="no" >>FW_ALLOW_INCOMING_HIGHPORTS_UDP="DNS" >>FW_SERVICE_AUTODETECT="yes" >>FW_SERVICE_DNS="yes" >>FW_SERVICE_DHCLIENT="no" >>FW_SERVICE_DHCPD="yes" >>FW_SERVICE_SQUID="yes" >>FW_SERVICE_SAMBA="no" >>FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 >>10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ >> 192.168.0.0/16,10.62.56.0/24,udp,1:65535 >>10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ >> 192.168.0.0/16,10.62.56.0/24,icmp 10.62.56.0/24,192.168.0.0/16,icmp" >>FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 0/0,192.168.65.227,tcp,5900 \ >> 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" >>FW_REDIRECT="" >>FW_LOG_DROP_CRIT="yes" >>FW_LOG_DROP_ALL="yes" # Jason Dobbs >>FW_LOG_ACCEPT_CRIT="yes" >>FW_LOG_ACCEPT_ALL="yes" # Jason Dobbs >>FW_LOG="--log-level warning --log-tcp-options --log-ip-option >>--log-prefix SuSE-FW" >>FW_KERNEL_SECURITY="yes" >>FW_STOP_KEEP_ROUTING_STATE="no" >>FW_ALLOW_PING_FW="yes" >>FW_ALLOW_PING_DMZ="no" >>FW_ALLOW_PING_EXT="no" >>FW_ALLOW_FW_TRACEROUTE="yes" >>FW_ALLOW_FW_SOURCEQUENCH="yes" >>FW_ALLOW_FW_BROADCAST="no" >>FW_IGNORE_FW_BROADCAST="yes" >>FW_ALLOW_CLASS_ROUTING="yes" >>FW_CUSTOMRULES="" >>FW_REJECT="no" >>FW_HTB_TUNE_DEV="" >>----------------------------------------------------------------------------------- >> >> >> >> >> > > > > >

2 1

AW: [suse-security] Multiple Internal Networks not Routing
by Rasp, Robert 06 Apr '04

06 Apr '04

Hello, if i had this problem, i try it without firewall first.... Then you can be sure your routing is ok. It may be better to stay offline while the firewallscript isn't runnung :-) CU Robert -----Ursprüngliche Nachricht----- Von: Jason Dobbs [mailto:jdobbs@casuarinacasino.com] Gesendet: Dienstag, 6. April 2004 17:18 An: suse-security(a)suse.com Betreff: [suse-security] Multiple Internal Networks not Routing Hi, Hoping someone can point out my mistake here! I have SuSE 9.0 running with 3 NICS (eth0=internet, eth1=192.168.0.0/16, and eth2=10.62.56.0/24). Everything with the internet is working great. The problem is routing traffic between eth1 and eth2. I've set both networks as trusted, set FW_FORWARD, and enabled FW_ALLOW_CLASS_ROUTING. Nothing has seemed to work. Posted is also a copy of my /etc/sysconfig/SuSEfirewall2. I'd like to allow all traffic between these 2 networks. Any ideas? ------------------------------------------------------------------- FW_QUICKMODE="no" FW_DEV_EXT="eth0" FW_DEV_INT="eth1 eth2" FW_DEV_DMZ="" FW_ROUTE="yes" FW_MASQUERADE="yes" FW_MASQ_DEV="$FW_DEV_EXT" FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail server ip>/32 10.62.56.0/24,<mail server ip>/32" FW_PROTECT_FROM_INTERNAL="no" FW_AUTOPROTECT_SERVICES="yes" FW_SERVICES_EXT_TCP="http https ssh" FW_SERVICES_EXT_IP="" FW_SERVICES_DMZ_TCP="" FW_SERVICES_DMZ_IP="" FW_SERVICES_INT_TCP="" FW_SERVICES_INT_UDP="" FW_SERVICES_INT_IP="" FW_SERVICES_QUICK_TCP="" FW_SERVICES_QUICK_UDP="" FW_SERVICES_QUICK_IP="" FW_TRUSTED_NETS="192.168.0.0/16 10.62.56.0/24" FW_ALLOW_INCOMING_HIGHPORTS_TCP="no" FW_ALLOW_INCOMING_HIGHPORTS_UDP="DNS" FW_SERVICE_AUTODETECT="yes" FW_SERVICE_DNS="yes" FW_SERVICE_DHCLIENT="no" FW_SERVICE_DHCPD="yes" FW_SERVICE_SQUID="yes" FW_SERVICE_SAMBA="no" FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ 192.168.0.0/16,10.62.56.0/24,udp,1:65535 10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ 192.168.0.0/16,10.62.56.0/24,icmp 10.62.56.0/24,192.168.0.0/16,icmp" FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 0/0,192.168.65.227,tcp,5900 \ 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" FW_REDIRECT="" FW_LOG_DROP_CRIT="yes" FW_LOG_DROP_ALL="yes" # Jason Dobbs FW_LOG_ACCEPT_CRIT="yes" FW_LOG_ACCEPT_ALL="yes" # Jason Dobbs FW_LOG="--log-level warning --log-tcp-options --log-ip-option --log-prefix SuSE-FW" FW_KERNEL_SECURITY="yes" FW_STOP_KEEP_ROUTING_STATE="no" FW_ALLOW_PING_FW="yes" FW_ALLOW_PING_DMZ="no" FW_ALLOW_PING_EXT="no" FW_ALLOW_FW_TRACEROUTE="yes" FW_ALLOW_FW_SOURCEQUENCH="yes" FW_ALLOW_FW_BROADCAST="no" FW_IGNORE_FW_BROADCAST="yes" FW_ALLOW_CLASS_ROUTING="yes" FW_CUSTOMRULES="" FW_REJECT="no" FW_HTB_TUNE_DEV="" ----------------------------------------------------------------------------------- -- Thank You, Jason Dobbs . IT Manager Westin Casuarina Casino Las Vegas -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

1 0

Re: [suse-security] Multiple Internal Networks not Routing
by Philipp Rusch 06 Apr '04

06 Apr '04

Hello Jason, OK, I see ... what about my note about /16 and /24 masks ? do you *have* to do it like that ? When you leave both FW_MASQ_NETS="" (empty) and FW_FORWARD="" (empty) and do a traceroute from a host on eth1 to a host on eth2 or vice versa, what do you see in the firewall logs in /var/logs/messages ? Lets get this to work, Philipp Jason Dobbs schrieb: > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref > Use Iface > <public ip> 0.0.0.0 255.255.255.128 U 0 0 > 0 eth0 > 10.62.56.0 0.0.0.0 255.255.255.0 U 0 0 > 0 eth2 > 192.168.0.0 0.0.0.0 255.255.0.0 U 0 0 > 0 eth1 > 0.0.0.0 <public gw> 0.0.0.0 UG 0 0 0 > eth0 > > ip forwarding is turned on in yast! > > Thank You, > Jason Dobbs . IT Manager > Westin Casuarina Casino Las Vegas > p. 702.836.5939 f. 270.913.7462 > mailto: jdobbs(a)casuarinacasino.com > > > > Philipp Rusch wrote: > >> Hi Jason what is your routing table looking like ? >> post route -nv back here >> are you routing at all ? (set ip_forward=yes in YAST) >> >> other comments inline ... >> >> Jason Dobbs schrieb: >> >>> --SNIP --- >> >> >> >>> FW_MASQ_NETS="192.168.65.224/27 10.62.56.0/24 192.168.0.0/16,<mail >>> server ip>/32 10.62.56.0/24,<mail server ip>/32" >> >> >> >> ----------------------------------^ this >> ----------------------------------and this ^ is redundant, >> 192.168.65.224/27 is completely contained >> in 192.168.0.0./16 network, which means all 192.168."something" nets ... >> you know that normally 192.168.x.y net is a /24-type network and a >> 10.x.y.z has a /16 type mask ?? >> >> --SNIP-- >> >>> FW_FORWARD="192.168.0.0/16,10.62.56.0/24,tcp,1:65535 >>> 10.62.56.0/24,192.168.0.0/16,tcp,1:65535 \ >>> 192.168.0.0/16,10.62.56.0/24,udp,1:65535 >>> 10.62.56.0/24,192.168.0.0/16,udp,1:65535 \ >>> 192.168.0.0/16,10.62.56.0/24,icmp >>> 10.62.56.0/24,192.168.0.0/16,icmp" >>> FW_FORWARD_MASQ="0/0,192.168.65.227,tcp,5800 >>> 0/0,192.168.65.227,tcp,5900 \ >>> 0/0,192.168.65.227,tcp,5632 0/0,192.168.65.227,udp,5632" >> >> >> >> what are you trying to do here ? >> If routing just doesn't work then forwarding doesn't help that much ... >> >> I think something different is causing your troubles than missing >> entries here, >> seems you did to much of a work, it is normally quite simple, what >> you try to do :-) >> >> Regards from Germany, Philipp >> >> > >

1 0