[opensuse] Would like explanation from networking guru
I have a Dell D820 running Suse 10.2 with WinXP underparalles. I have WinXP logged on to the corporate network and can access the network with no problems. I have Linux using the Wireless network, and it wroks fine, other than the network dying now and then. I can access the internett fine. We have a Suse Linux 10.1 server on the corporate network running smb share, postgres database, and local http apache server. Since this is not on the windows domain, but on the same subnet, we have to access it using the ip address. This is no problem. The networks are different networks, 10;18.xx.xx and 192.168.xx.xx and not even connected via the internet as the corporate network is via a proxy server and vpn. Both network cards show up with ifconfig and I changed the default route from the windows network gateway to the wireless network gateway. What I don't understand and would like an explanation for, is that I can also access the linux server on the windows network, (file server and postgres and http) from linux on my laptop which is on a different network. How does this work? I did not even think it was possible, however I discovered it accidently when accessing the http, I thought it from Winxp & firefox, but it was firefox in Linux. I will say it is very convenient though, in fact, it is great. Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wednesday 14 February 2007, Art Fore wrote:
The networks are different networks, 10;18.xx.xx and 192.168.xx.xx and not even connected via the internet as the corporate network is via a proxy server and vpn. Both network cards show up with ifconfig and I changed the default route from the windows network gateway to the wireless network gateway.
Art: parsing that hurt my brain. As for how you get there, try traceroute, or post your output from "route" -- _____________________________________ John Andersen
Art Fore did not write:
I have a Dell D820 running Suse 10.2 with WinXP under parallels. I have WinXP logged on to the corporate network and can access the network.
Linux uses the Wireless network to access the internet. The connection is lost now and then. It can access the internet.
There is an OpenSuSE 10.1 server on our corporate network. It provides SMB shares and runs PostgreSQL and Apache. Since it is on the same subnet we have to access it using the ip address, though it is not joined to the domain.
Our corporate network and some other network use the IP ranges 10.18.0.0/16 and 192.168.0.0/16. [hmm...] What are the subnet masks? They are not connected via the internet as connections to it through the corporate network are via a proxy server and vpn. Both network cards show up with ifconfig. I changed the default route from the windows network gateway to the wireless network gateway.
What I don't understand: I can access the linux server on the windows network. SMB, postgres and http are all available from my Linux laptop which is on a different network [IP range? Subnet?]. How does this work? I did not think it was possible. I discovered it by accident accessing the http. I thought it [was provided by?] was from win xp & firefox, but it was firefox in linux.
I am glad about this, but I am curious how it works.
Art (paraphrased)
It could be that Parallels (henceforth //s) provides bridging between adapters. Also, note that a single adapter can have as many IPs as you could reasonably ask for. But there's a lot you've not said: which adapters are visible to which operating systems? Are you running anything else under //s? How is //s configured? Russell Jones -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thu, 2007-02-15 at 10:17 +0000, Russell Jones wrote:
Art Fore did not write:
I have a Dell D820 running Suse 10.2 with WinXP under parallels. I have WinXP logged on to the corporate network and can access the network.
Linux uses the Wireless network to access the internet. The connection is lost now and then. It can access the internet.
There is an OpenSuSE 10.1 server on our corporate network. It provides SMB shares and runs PostgreSQL and Apache. Since it is on the same subnet we have to access it using the ip address, though it is not joined to the domain.
Our corporate network and some other network use the IP ranges 10.18.0.0/16 and 192.168.0.0/16. [hmm...] What are the subnet masks? They are not connected via the internet as connections to it through the corporate network are via a proxy server and vpn. Both network cards show up with ifconfig. I changed the default route from the windows network gateway to the wireless network gateway.
What I don't understand: I can access the linux server on the windows network. SMB, postgres and http are all available from my Linux laptop which is on a different network [IP range? Subnet?]. How does this work? I did not think it was possible. I discovered it by accident accessing the http. I thought it [was provided by?] was from win xp & firefox, but it was firefox in linux.
I am glad about this, but I am curious how it works.
Art (paraphrased)
It could be that Parallels (henceforth //s) provides bridging between adapters. Also, note that a single adapter can have as many IPs as you could reasonably ask for.
But there's a lot you've not said: which adapters are visible to which operating systems? Are you running anything else under //s? How is //s configured?
Russell Jones
See it traceroute provides some info. E-Mail disclaimer: http://www.sunspace.co.za/emaildisclaimer.htm -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thu, 2007-02-15 at 12:23 +0200, Hans van der Merwe wrote:
On Thu, 2007-02-15 at 10:17 +0000, Russell Jones wrote:
Art Fore did not write:
I have a Dell D820 running Suse 10.2 with WinXP under parallels. I have WinXP logged on to the corporate network and can access the network.
Linux uses the Wireless network to access the internet. The connection is lost now and then. It can access the internet.
There is an OpenSuSE 10.1 server on our corporate network. It provides SMB shares and runs PostgreSQL and Apache. Since it is on the same subnet we have to access it using the ip address, though it is not joined to the domain.
Our corporate network and some other network use the IP ranges 10.18.0.0/16 and 192.168.0.0/16. [hmm...] What are the subnet masks? They are not connected via the internet as connections to it through the corporate network are via a proxy server and vpn. Both network cards show up with ifconfig. I changed the default route from the windows network gateway to the wireless network gateway.
What I don't understand: I can access the linux server on the windows network. SMB, postgres and http are all available from my Linux laptop which is on a different network [IP range? Subnet?]. How does this work? I did not think it was possible. I discovered it by accident accessing the http. I thought it [was provided by?] was from win xp & firefox, but it was firefox in linux.
I am glad about this, but I am curious how it works.
Art (paraphrased)
It could be that Parallels (henceforth //s) provides bridging between adapters. Also, note that a single adapter can have as many IPs as you could reasonably ask for.
But there's a lot you've not said: which adapters are visible to which operating systems? Are you running anything else under //s? How is //s configured?
Russell Jones
See it traceroute provides some info.
E-Mail disclaimer: http://www.sunspace.co.za/emaildisclaimer.htm
comes up with all * Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thu, 2007-02-15 at 10:17 +0000, Russell Jones wrote:
Art Fore did not write:
I have a Dell D820 running Suse 10.2 with WinXP under parallels. I have WinXP logged on to the corporate network and can access the network.
Linux uses the Wireless network to access the internet. The connection is lost now and then. It can access the internet.
There is an OpenSuSE 10.1 server on our corporate network. It provides SMB shares and runs PostgreSQL and Apache. Since it is on the same subnet we have to access it using the ip address, though it is not joined to the domain.
Our corporate network and some other network use the IP ranges 10.18.0.0/16 and 192.168.0.0/16. [hmm...] What are the subnet masks? They are not connected via the internet as connections to it through the corporate network are via a proxy server and vpn. Both network cards show up with ifconfig. I changed the default route from the windows network gateway to the wireless network gateway.
What I don't understand: I can access the linux server on the windows network. SMB, postgres and http are all available from my Linux laptop which is on a different network [IP range? Subnet?]. How does this work? I did not think it was possible. I discovered it by accident accessing the http. I thought it [was provided by?] was from win xp & firefox, but it was firefox in linux.
I am glad about this, but I am curious how it works.
Art (paraphrased)
It could be that Parallels (henceforth //s) provides bridging between adapters. Also, note that a single adapter can have as many IPs as you could reasonably ask for.
But there's a lot you've not said: which adapters are visible to which operating systems? Are you running anything else under //s? How is //s configured?
Russell Jones
I am not running anything else under parallels. Here is the route output. Destination Gateway Genmask Flags Metric Ref Use Iface 10.37.129.0 * 255.255.255.0 U 0 0 0 vnic0 10.18.32.0 * 255.255.255.0 U 0 0 0 eth0 192.168.11.0 * 255.255.255.0 U 0 0 0 eth1 link-local * 255.255.0.0 U 0 0 0 eth0 loopback * 255.0.0.0 U 0 0 0 lo default 192.168.11.1 0.0.0.0 UG 0 0 0 eth1 eth0 is winxp, eth1 is linux Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 15 February 2007 17:41, Art Fore wrote:
Here is the route output.
Destination Gateway Genmask Flags Metric Ref Use Iface 10.37.129.0 * 255.255.255.0 U 0 0 0 vnic0 10.18.32.0 * 255.255.255.0 U 0 0 0 eth0 192.168.11.0 * 255.255.255.0 U 0 0 0 eth1 link-local * 255.255.0.0 U 0 0 0 eth0 loopback * 255.0.0.0 U 0 0 0 lo default 192.168.11.1 0.0.0.0 UG 0 0 0 eth1
eth0 is winxp, eth1 is linux
And 192.168.11.1 is the gateway between Linux network and Windows network? There you go. -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 1:55pm up 5:21, 2.6.16.21-0.8-default GNU/Linux Let's use OpenOffice. http://www.openoffice.org
On Fri, 2007-02-16 at 13:55 +0700, Fajar Priyanto wrote:
On Thursday 15 February 2007 17:41, Art Fore wrote:
Here is the route output.
Destination Gateway Genmask Flags Metric Ref Use Iface 10.37.129.0 * 255.255.255.0 U 0 0 0 vnic0 10.18.32.0 * 255.255.255.0 U 0 0 0 eth0 192.168.11.0 * 255.255.255.0 U 0 0 0 eth1 link-local * 255.255.0.0 U 0 0 0 eth0 loopback * 255.0.0.0 U 0 0 0 lo default 192.168.11.1 0.0.0.0 UG 0 0 0 eth1
eth0 is winxp, eth1 is linux
And 192.168.11.1 is the gateway between Linux network and Windows network? There you go.
How do you get that 192.168.11.1 is gateway to the Windows network? I had to delete the default 10.18.32.1 gateway for eth0 so I could get to the internet via eth1 wireless from linux. Windows goes to eth0 via vnic0 bridged network. If it were going to eth1, I would not be able to logon to the corporate network, and by the same token, If I remove the default eth1 192.168.11.1 route, I cannot get to the internet, but windows still can via eth0, However, can still get to the samba server on the 10.18.32.0 netowrk. Please explain. Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Friday 16 February 2007 14:20, Art Fore wrote:
default 192.168.11.1 0.0.0.0 UG 0 0 0 eth1
eth0 is winxp, eth1 is linux
And 192.168.11.1 is the gateway between Linux network and Windows network? There you go.
How do you get that 192.168.11.1 is gateway to the Windows network? I had to delete the default 10.18.32.1 gateway for eth0 so I could get to the internet via eth1 wireless from linux. Windows goes to eth0 via vnic0 bridged network. If it were going to eth1, I would not be able to logon to the corporate network, and by the same token, If I remove the default eth1 192.168.11.1 route, I cannot get to the internet, but windows still can via eth0, However, can still get to the samba server on the 10.18.32.0 netowrk. Please explain.
UG = default gateway Actually as long as you have PC that acts as gateway in your network, you can arrange the routing to anywhere in your company network using those gateways The command is: ip route add 192.168.11.0/24 via 192.168.11.1 ip route add blabla/bla via blabla so on... -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 2:38pm up 6:05, 2.6.16.21-0.8-default GNU/Linux Let's use OpenOffice. http://www.openoffice.org
On Fri, 2007-02-16 at 14:38 +0700, Fajar Priyanto wrote:
On Friday 16 February 2007 14:20, Art Fore wrote:
default 192.168.11.1 0.0.0.0 UG 0 0 0 eth1
eth0 is winxp, eth1 is linux
And 192.168.11.1 is the gateway between Linux network and Windows network? There you go.
How do you get that 192.168.11.1 is gateway to the Windows network? I had to delete the default 10.18.32.1 gateway for eth0 so I could get to the internet via eth1 wireless from linux. Windows goes to eth0 via vnic0 bridged network. If it were going to eth1, I would not be able to logon to the corporate network, and by the same token, If I remove the default eth1 192.168.11.1 route, I cannot get to the internet, but windows still can via eth0, However, can still get to the samba server on the 10.18.32.0 netowrk. Please explain.
UG = default gateway Actually as long as you have PC that acts as gateway in your network, you can arrange the routing to anywhere in your company network using those gateways
The command is: ip route add 192.168.11.0/24 via 192.168.11.1 ip route add blabla/bla via blabla so on...
OK, if I delete the default 192.168.11.1 UG route and no longer have a default gateway, I can still get to the samba server on the windows network (eth0), but not the internet on the wireless (eth1) from linux.. Cannot get to the internet from linux on the windows network in any case though as I am not logged on from Linux, and internet access from the windows (eth0) is only available via a webproxy (which is in the Texas & I am Taiwan) available only if you are logged on to the windows domain. The only machine I do get access to is the local samba server from Linux, that part which I understand, just not how I get to it when Linux is on eth1 and it is on eth0 network. Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Friday 16 February 2007 14:56, Art Fore wrote:
OK, if I delete the default 192.168.11.1 UG route and no longer have a default gateway, I can still get to the samba server on the windows network (eth0), but not the internet on the wireless (eth1) from linux.. Cannot get to the internet from linux on the windows network in any case though as I am not logged on from Linux, and internet access from the windows (eth0) is only available via a webproxy (which is in the Texas & I am Taiwan) available only if you are logged on to the windows domain. The only machine I do get access to is the local samba server from Linux, that part which I understand, just not how I get to it when Linux is on eth1 and it is on eth0 network.
Without any default gateway you can still connect to any PC in the SAME network as your network card configured. The function of default gateway is to inform your PC which path to take if it needs to go "OUTSIDE" your PC network. Proxy is providing a similar service as a gateway, that's why you can use it to browse the internet with a prerequisite of logging to windows domain (apparently the proxy requires authentication). -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 3:30pm up 6:57, 2.6.16.21-0.8-default GNU/Linux Let's use OpenOffice. http://www.openoffice.org
On Fri, 2007-02-16 at 15:30 +0700, Fajar Priyanto wrote:
On Friday 16 February 2007 14:56, Art Fore wrote:
OK, if I delete the default 192.168.11.1 UG route and no longer have a default gateway, I can still get to the samba server on the windows network (eth0), but not the internet on the wireless (eth1) from linux.. Cannot get to the internet from linux on the windows network in any case though as I am not logged on from Linux, and internet access from the windows (eth0) is only available via a webproxy (which is in the Texas & I am Taiwan) available only if you are logged on to the windows domain. The only machine I do get access to is the local samba server from Linux, that part which I understand, just not how I get to it when Linux is on eth1 and it is on eth0 network.
Without any default gateway you can still connect to any PC in the SAME network as your network card configured. The function of default gateway is to inform your PC which path to take if it needs to go "OUTSIDE" your PC network. Proxy is providing a similar service as a gateway, that's why you can use it to browse the internet with a prerequisite of logging to windows domain (apparently the proxy requires authentication).
OK, I think I understand what your are saying. Thanks Art -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
p.s. I'm not a networking guru. Hope my comments and questions help, though. Russell Jones -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (5)
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Art Fore -
Fajar Priyanto -
Hans van der Merwe -
John Andersen -
Russell Jones