December 2002 - openSUSE Security - openSUSE Mailing Lists

Security must read books
by Mario Ohnewald 22 Dec '02

22 Dec '02

Hello! I have just bought the book "Linux Security" by Bob Toxen, which is supposed to be really good. I have already skipped through it a little and it looks well written and easy to read/understand. Are there any similar Linux/Unix Security books out there? I know i could get a 3MB PDF file of linux network security, or whatever. It often turns out that its wasting time because its too old, simply to general or just boring to read. And i prefer to grep a cup of tea and tar myself into a yummy covered bed. ;D So what "must read" books can you recommend which are similar to Bob ToxensŽs? Cheers, Spiekey

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fw: KDE 3.0.5a: Security Release
by Mathias Homann 22 Dec '02

22 Dec '02

>From http://dot.kde.org/1040505166/ "The KDE Project today released a security advisory affecting all versions of KDE 2 and KDE 3. The advisory is the culmination of the security audit which delayed the release of KDE 3.1 until January. While no exploits are currently known, the KDE Project strongly encourages all KDE users to upgrade to KDE 3.0.5a, which was also announced today, or to apply the patches provided for KDE 2.2.2. Due to the year-end Holidays, few binary packages are available at this time. Please check the KDE 3.0.5a information page and your vendor's website periodically for available packages. Note that some vendors are expected to incorporate the security improvements into new builds of KDE 3.0.5." So, any chance to get update packages for any suse distribution _below_ 8.1? bye, MH -- Die unaufgeforderte Zusendung einer Werbemail an Privatleute verst� gegen 1 UWG und 823 I BGB (Beschlu�des LG Berlin vom 2.8.1998 Az: 16 O 201/98). Jede kommerzielle Nutzung der bermittelten persnlichen Daten sowie deren Weitergabe an Dritte ist ausdrcklich untersagt!

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RE: [suse-security] VMWare and SuSEfirewall2
by M. Neubert 21 Dec '02

21 Dec '02

Hello Ingo, I don't no why, but after a while I followed a hint by Togan Muftuoglu and I restart(I am this not used unfortunately.) my box. After the vmware installation I have made only a "rcvmware start". Possibly, that was not enough. Now, all works even better than accustomed. Thank you at all! M. Neubert -- # Mario Neubert -- IT-Enterprise-Solutions # Obere Mühlenstr. 36, D-04178 Leipzig, Germany # Phone: +49 341 4422391, Fax: +49 341 44219870 # Internet: http://www.mario-neubert.de > -----Original Message----- > From: Ingo Doerrie [mailto:ingo@doerrie-net.de] > Sent: Saturday, December 21, 2002 7:39 AM > To: M. Neubert > Subject: Re: [suse-security] VMWare and SuSEfirewall2 > > > Hello! > > Can you surf from the VMWare-machine? If so, the connection > is there and the > VMWare runs fine. > > I did not find any non-working software. Emule etc. run pretty fine. > > Am Freitag, 20. Dezember 2002 12:50 schrieb M. Neubert: > > Hello list, > > > > I require a little bit of your help. > > My Router/Gateway runs with SuSE 8.1 Professional. I > installed VMWare > > from CD. The VMWare Guest-System is W2k-Pro and within this, > > Overnet/Emule is installed. My Router has two network > cards, one for LAN > > one for DSL. My home network is through the Router and SuSEfirewall > > masqueraded/protected. Respective a TCP/UDP Port is forwarded to the > > Guest-System. The NIC's from the Guestsystem are bridged to > eth0, the > > internal nic. > > > > I think that all should work, but doesn't do it! Overnet/Emule says > > "Firewalled." I tried all and I am almost desperate. I > have tried to > > dump the networktrafic on the ports on internal Nic, but nothing > > happened. > > > > As last, I got the idea, if I be too stupid to install a > Firewall with > > masquerading. And so I tested the w2k environment on a real > computer. > > Well, I am not so stupidly! All is working fine. > > > > Is this a problem with the modules from vmware network > system or did I > > overlook something in SuSEfirewall2? Goes the traffic for > vmware through > > pre/postrouting? > > > > Before I will install a vpn/pptp solution(which is my next > idea) between > > host/guest-system and I retest all again, I would like to > ask the list > > for some help or some ideas. > > > > > > > > Therefore many thanks and happy Christmas! > > > > > > > > Mit freundlichen Grüßen > > M. Neubert > > -- > Freundliche Grüße > kind regards > > Ingo >

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Re: [suse-security] Help with ssh
by Robert Fenney 20 Dec '02

20 Dec '02

Thanks but I was looking to only limit access from ssh. This is was was sent: in sshd_config AllowUsers user1 user2 user3 This will only allow users 1,2, and 3 access to the system using sshd. Thanks everyone! Robert On Friday, December 20, 2002, at 09:20 AM, <rk(a)johanns-datentechnik.de> wrote: > In /etc/passwd change the users' shell entry "/bin/bash" to > "/bin/false" (last field in line) > (try with a "demo" user first), any login for this user should be > disabled (ssh, telnet ...) > The restart of any daemons ist not necessary. > > > > > > -------- Original Message -------- > Subject: [suse-security] Help with ssh (20-Dez-2002 10:12) > From: rfenney(a)fentek.com > To: rk(a)johanns-datentechnik.de > >> Is there a way to disable ssh logins for user? I would like to only let >> specific users have access to ssh sessions. >> >> Thanks! >> >> Robert >> >> >> -- >> 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 >> >> >> To: suse-security(a)suse.com >

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SuSE Security Announcement: cyrus-imapd (SuSE-SA:2002:048)
by Sebastian Krahmer 20 Dec '02

20 Dec '02

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: cyrus-imapd Announcement-ID: SuSE-SA:2002:048 Date: Fri Dec 20 18:00:00 MET 2002 Affected products: 7.1, 7.2, 7.3, 8.0, 8.1, SuSE eMail Server III, 3.1, SuSE Linux Connectivity Server, SuSE Linux Enterprise Server 7, SuSE Linux Enterprise Server 8, SuSE Linux Office Server, SuSE Linux Openexchange Server 4 Vulnerability Type: remote command execution Severity (1-10): 6 SuSE default package: no Cross References: - Content of this advisory: 1) security vulnerability resolved: Buffer overflows in cyrus-imapd. problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - MySQL - traceroute - CUPS - imap-2000c 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The cyrus imapd contains a buffer overflow which could be exploited by remote attackers prior to logging in. Attackers could generate oversized error messages and overflow buffers inside imapd. Additionally to this fix, an overflow in the SASL library (as used by the cyrus imapd) has been fixed. This bug only affects SuSE Linux 8.1, the SuSE Linux Enterprise Server 8 and the SuSE Linux Openexchange Server. Since there is no workaround possible except shutting down the IMAP server, we strongly recommend an update. 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. To be sure the update takes effect you have to restart the IMAP server by executing the following commands as root: /etc/rc.d/cyrus restart and (if using saslauthd) /etc/rc.d/saslauthd restart i386 Intel Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-imapd-2.1.9-41.i… 47785bc84eeebbddcd50a267684d6500 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-sasl2-2.1.7-52.i… b740ad1a675f2c14ffc33097a1c41ee5 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-imapd-2.1.9-41.i… 0119fa57ef939939357dd86cd1ec1ea6 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-sasl2-2.1.7-52.i… fbf3bad7c6542e45d699c0d69b0798c0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cyrus-imapd-2.1.9-41.sr… a51f1b81249cad5e48e5d05535ae2ab8 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cyrus-sasl2-2.1.7-52.sr… 98cba687c3d2c89761cc6e9b34cd7e71 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/cyrus-imapd-2.0.16-361.i386.… 3dd8c8c26753cddb56f9adb2e0a352fe patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/cyrus-imapd-2.0.16-361.i386.… 612e6f1652c536b316a6a480389dc729 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/cyrus-imapd-2.0.16-361.src.… 7c4cd098d4c96726fc2ed21597a8ae3c SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/cyrus-imapd-2.0.16-361.i386.… bd294c4539c895d16ff11fc8298a6c44 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/cyrus-imapd-2.0.16-361.src.… 689bd12bc2fefc627dd13b45cca68922 SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/cyrus-imapd-2.0.16-362.i386.… feb98be591cd938dee6fbff1b09e11d0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/cyrus-imapd-2.0.16-362.src.… 2beb58cb743a0923cefbceccea871df2 SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/n2/cyrus-imapd-2.0.12-69.i386.r… 61f850212a2d2ae72a7446df3b96e891 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/cyrus-imapd-2.0.12-69.src.r… 77252f38facbbde01839e817a2f0514d Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/cyrus-imapd-2.0.16-58.sparc… 093642ae51cad7a03660ea5b89dd533e source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/cyrus-imapd-2.0.16-58.src.… 4e1bc8e98e61918cce6976c7c373bc53 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/n2/cyrus-imapd-2.0.12-24.alpha.r… 4194ee9cc379d0d8448029480c7b36b3 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/cyrus-imapd-2.0.12-24.src.rpm 08ab826ab71a531bb51c12b7fed19919 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/cyrus-imapd-2.0.16-208.ppc.rpm 3d57fefb8f9d23a6e863652f148fd4ff source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/cyrus-imapd-2.0.16-208.src.r… 4e883ee340e061c948c1835aff15e50b SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n2/cyrus-imapd-2.0.12-32.ppc.rpm d518ece0e01cf731ab2d19c73c82a2de source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/cyrus-imapd-2.0.12-32.src.rpm d61b35b30f5704194506ec1238f741bf ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - MySQL Stefan Esser from e-matters discovered security critical bugs in the MySQL server and client libraries. New packages are currently being built and will soon be available. We will inform you with a separate advisory when all packages for all platforms are available. - traceroute The recent update for the traceroute package did not fix all overflows properly. New packages have been prepared and should already be available on our ftp servers. The newly found bugs are not critical since the last update for traceroute drops the superuser privileges before the overflow can be triggered. However since the attacker could gain access to a raw socket upon successfull exploitation, an update is recommended. - CUPS iDEFENSE reported various bugs in the CUPS printing system. These bugs could lead to a remote compromise of the system. New packages are already available on our ftp servers. We will inform you with a separate advisory when all packages for all platforms are available. - imap-2000c The IMAP implementation of the University of Washington contained a buffer overflow. This overflow happens after the authentication phase, so only remote attackers with a valid IMAP account can exploit this bug. They will obtain a shell with their user privileges if exploited properly. ;-) Only versions less or eqal to imap-2000c (as shipped up to SL 7.3) are affected. The author of this imapd does not offer patches for older versions but rather suggests to use the newest version available at ftp://ftp.cac.washington.edu/mail/imap.tar.Z Due to the habbit of the author and the little impact of this bug, we do not provide patched pre-build packages. ______________________________________________________________________________ 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. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security(a)suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build(a)suse.de> - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBPgNajney5gA9JdPZAQHuDgf+N7BDJ1oBJvpmwS95UbvmOoAlG9kGDa8V K0s9O/oew6uyURbt1KS7Po2qvhx1xEaFLGzWIudSOoCunVcQj41K7zGZ7stO8BiG 7kft7Ku8DS9lamH6WRnADISPitGP832fXMdw+L5QfoZOrCRAmgljeT4NXJCQ7tHc Oa16g+qS1pdTWY6D/RaX8o1JRL9YBMfnWPXMFwkDBJVrjFDvsXUl3ahY2RO7Ey8M CYzYetRJBwlz5XXxd2zrXD/KS/qrVNTi3tn1F0KEmDUE50u4jPK8gE68ob2UjKRO nPOy1STIGhAXoynniPKsW66MV0/CL5m7jfITM02uIVi93UD1/Rpuxg== =l4Bg -----END PGP SIGNATURE----- -- ~ ~ perl self.pl ~ $_='print"\$_=\47$_\47;eval"';eval ~ krahmer(a)suse.de - SuSE Security Team ~

1 0

VMWare and SuSEfirewall2
by M. Neubert 20 Dec '02

20 Dec '02

Hello list, I require a little bit of your help. My Router/Gateway runs with SuSE 8.1 Professional. I installed VMWare from CD. The VMWare Guest-System is W2k-Pro and within this, Overnet/Emule is installed. My Router has two network cards, one for LAN one for DSL. My home network is through the Router and SuSEfirewall masqueraded/protected. Respective a TCP/UDP Port is forwarded to the Guest-System. The NIC's from the Guestsystem are bridged to eth0, the internal nic. I think that all should work, but doesn't do it! Overnet/Emule says "Firewalled." I tried all and I am almost desperate. I have tried to dump the networktrafic on the ports on internal Nic, but nothing happened. As last, I got the idea, if I be too stupid to install a Firewall with masquerading. And so I tested the w2k environment on a real computer. Well, I am not so stupidly! All is working fine. Is this a problem with the modules from vmware network system or did I overlook something in SuSEfirewall2? Goes the traffic for vmware through pre/postrouting? Before I will install a vpn/pptp solution(which is my next idea) between host/guest-system and I retest all again, I would like to ask the list for some help or some ideas. Therefore many thanks and happy Christmas! Mit freundlichen Grüßen M. Neubert -- # Mario Neubert -- IT-Enterprise-Solutions # Obere Mühlenstr. 36, D-04178 Leipzig, Germany # Phone: +49 341 4422391, Fax: +49 341 44219870 # Internet: http://www.mario-neubert.de

2 10

Firewall2 installation, implementation
by Thorsten Hilger 20 Dec '02

20 Dec '02

Hi List, I'm not a kind of a Linux newbie, but i don't got much time to configure a runnin Firewall2. Is anybody out there who could help me. I got DSL at home 'n wanna masq. my internal network to the internet, maybe wanna have a vpn do a friends network. Is there anyone who could help me with that? I know that u guys don't have much time, i don't either but i don't wanna read that howto's 'n documentations. Got no time for that, have to work a lot. US Army is hot, so if any guy got some time for that u could write me a private message.. Thanks a lot.. So i wrote this from a friends computer, this is acctually not my e-mail address, if wanna email me please write to: rogers_jay(a)hilger-online.com Bye Jay

4 3

AW: [suse-security] Amavis virus detection
by Ulrich Roth 20 Dec '02

20 Dec '02

Hello, > I've just installed SuSE 8.1 with Postfix and Amavis and have > tried sending the eicar.com virus pattern in an attachment. > This worked great - the virus was detected and blocked. > However, I also tried sending a copy of Bugbear to > one of my own users externally via a web-based email service, > (onetel - similar to hotmail, et al), and this was sent through to the > user without being blocked :( > > The message headers contains the entry > > X-Virus-Scanned: by AMaViS 0.3.12pre8 > > Any ideas, anyone? Which virus scanner do you use on your SuSE box, and is it up to date? Bye Uli -- Ulrich Roth IMPACT Business & Technology Consulting GmbH Im Mediapark 8 / KölnTurm D-50670 Koeln Phone +49-221-93 70 80-29 Fax +49-221-93 70 80-15 E-Mail: roth(a)impact.de

5 5

Help with ssh
by Robert Fenney 20 Dec '02

20 Dec '02

Is there a way to disable ssh logins for user? I would like to only let specific users have access to ssh sessions. Thanks! Robert

2 1

telnet or ssh not working on eth1 when ipsec0 is active on eth0
by Philipp Rusch 20 Dec '02

20 Dec '02

Hello all, I watched a strange behaviour on SuSE 8.0, when using a server with two ethernet cards and running FreeSWAN 1.98b (ipsec) The setup is as follows: - eth0 is external, with ipsec0 bound to it ("real" IP address) - eth1 is internal LAN, private address of 192.168.x.y form - no "special" firewall setup, no NAT, - any traffic is accepted (still testing ...) - routing is effective (ip_forward = 1) If I try to telnet to this machine from internal, I get a network timeout, although I see a connection attempt in iptraf on eth1. But I can connect from the ipsec-tunnel from outside to internal ip-address on telnet port without any problem ... ! (roadwarrior-laptop with dynamic ip) If I shutdown ipsec0, everything from internal works as expected. Is the traffic from internal routed to ipsec0 and only to that interface ? Any help is appreciated ! Regards from Rosbach/Germany, Philipp Rusch

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