[CentOS] Building a basic router with two nic's

Wed Aug 16 13:05:36 UTC 2006
Chris Mauritz <chrism at imntv.com>

rado wrote:
> On Wed, 2006-08-16 at 14:39 +0200, centos wrote:
>   
>> I need help setting up a basic routing between two nic's on my CentOS 
>> desktop. I thought I'd understood the basics, but ... I don,t want a nat 
>> router, just packets forwarded back and fort.
>>
>> This is what I thought would do the trick, but didn't. Can someone 
>> please give me some pointers or links so I can get this right.
>>
>> # echo "1" > /proc/sys/net/ipv4/ip_forward
>> # route add -net 192.168.2.0 netmask 255.255.255.0 eth1
>> # route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.150 eth1
>> #
>> # route -n
>> Kernel IP routing table
>> Destination Gateway Genmask Flags Metric Ref Use Iface
>> 192.168.2.0 192.168.1.150 255.255.255.0 UG 0 0 0 eth1
>> 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
>> 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
>> 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
>> 0.0.0.0 192.168.1.150 0.0.0.0 UG 0 0 0 eth1
>>
>>
>>     
> 2 nics hooked up on just 2 machines...gotta use a crossover cable..not a
> patch
>
> that's bout it
> ummm if you are also gatewayed outsite...I'd suggest googling round for
> passwordless ssh 
> for the two machines to packet back and forth on auto
>
> off to work now
>   

I think he's referring to two nics on the SAME computer.  :)

Cheers,