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

rado
Wed, 16 Aug 2006 12:51:53 -0000

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

John