Linux Routing Default Gateways

[sirsky]

Yeah, that's what I figured out...after an hour of staring at the
routing table, I said "Hmmm...where's the route for this other
network?  Oh, there isn't one?"

ip route add 172.16.1.0/24 via 192.168.1.254 dev eth0 

Got the job done for me.  Thanks for the reply though!!

-Lucas

On 5/23/05, JARiley at dstsystems.com <JARiley at dstsystems.com> wrote:
>  
> your one and only default route is for any traffic that does not have a
> specific route set to follow.  So, if you want certain traffic to go out a
> specific interface, you must create static routes in your table. 
>  
> examples: 
>  
> # route add  -net 192.168.5.0 netmask 255.255.255.0 eth0 
> netmask can be left out since 192.168 is a Class C by default. 
>  
> # route add -host 192.168.6.6 eth0 
>  
> that's it. 
>  
>  
> James Riley, CISSP 
>  
>  
>  
>  
>  sirsky <sirsky at gmail.com> 
> Sent by: kclug-bounces at kclug.org 
> 
> 05/23/2005 11:24 AM 
>  
> Please respond to
>  sirsky <sirsky at gmail.com> 
>  
>  
> To List - KCLUG <kclug at kclug.org> 
>  
> cc 
>  
> Subject Linux Routing Default Gateways 
>  
>  
>  
>  
>  
> I'm having a problem getting proper default gateways set up on my
>  Gentoo server...here's the scenario:
>  
>  Linux Server with 2 ethernet interfaces.
>  
>  eth0: 192.168.1.0 (internal)
>  eth1: 172.16.0.0 (dmz)
>  
>  Here is my current routing table:
>  
>  192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.5
>  172.16.0.0/16 dev eth1  proto kernel  scope link  src 172.16.0.2
>  127.0.0.0/8 via 127.0.0.1 dev lo  scope link
>  default via 172.16.0.254 dev eth1  metric 1
>  
>  I guess, what I need to know, is how do I set up my routing tables so
>  that traffic coming and going along eth0 uses the default gateway of
>  192.168.1.254 and traffic coming and going along eth1 uses the default
>  gateway of 172.16.0.254?
>  
>  I can easily set up a 'default gateway', but I can only do one...so
>  traffic coming in on 192.168.1.5 is still going out via
>  172.16.0.254...
>  
>  I have a Windows 2003 server already working in this
>  configuration...here is it's routing table:
>  
>  Active Routes:
>  Network Destination        Netmask          Gateway       Interface  Metric
>           0.0.0.0          0.0.0.0     172.16.0.254       172.16.0.3     10
>           0.0.0.0          0.0.0.0  192.168.230.254    192.168.230.3     10
>         127.0.0.0        255.0.0.0        127.0.0.1        127.0.0.1      1
>        172.16.0.0    255.255.255.0       172.16.0.3       172.16.0.3     10
>        172.16.0.3  255.255.255.255        127.0.0.1        127.0.0.1     10
>    172.16.255.255  255.255.255.255       172.16.0.3       172.16.0.3     10
>     192.168.230.0    255.255.255.0    192.168.230.3    192.168.230.3     10
>     192.168.230.3  255.255.255.255        127.0.0.1        127.0.0.1     10
>   192.168.230.255  255.255.255.255    192.168.230.3    192.168.230.3     10
>         224.0.0.0        240.0.0.0       172.16.0.3       172.16.0.3     10
>         224.0.0.0        240.0.0.0    192.168.230.3    192.168.230.3     10
>   255.255.255.255  255.255.255.255       172.16.0.3       172.16.0.3      1
>   255.255.255.255  255.255.255.255    192.168.230.3    192.168.230.3      1
>  Default Gateway:      172.16.0.254
>  
>  Any help would be greatly appreciated...I'd really like to get this
>  2003 server out and this new Linux server in it's place...
>  
>  Thanks,
>  
>  -Lucas
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