I am trying to install a remote link into our corporate network. Currently we have:

Internet--->DNS/GATEWAY--->Local Lan
XX.XXX.XXX.XX------------>192.168.0.0/24

I'm using ADTRAN NetVanta 3205s to extend via digital microwave link to remote site set up as follows:

Local Site-->router-->microwave link-->router-->remote site
192.168.0.240--10.XX.XX.XX-------->10.XX.XX.XX--->192.168.1.0/24

The link has been set up and is working, i.e the ADTRAN link is properly routing from one subnet to the other which I tested by using add route on a system at local end pointing to 192.168.1.XX traffic to 192.168.0.240. I was then able to ping from on end to the other.

The problem I have is, I don't know enough about iptables and routing tables to set the local gateway to send 192.168.1.X traffic through 192.168.0.240.

If someone who has experience with this could give me the proper lines to add into the local gateway I would surely appreciate the help.

Thanks Dan

p.s. local gateway system is set up on Slackware.

The command you need is 'route add'. The syntax is something like:

route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.0.240

And, on the other side (192.168.1\24)

route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.1.???

Normally, you would add the rules to your main router (Default Gateway)

The traceroute utility is quite good for checking routing paths i.e.

traceroute 192.168.1.???

Thanks for the quick response. That works, it is in fact how I tested the link. The problem is it only works until the system is restarted. I need the syntax to add it to the routing table in the default gateway so it is permanent and I'm assuming it will have to have a rule in the firewall about which I know very little.

Thanks again
Dan

Two suggestions:

You could simply add the commands to a shell script and run it at start up (within the /etc/rc.d/). This will ensure the commands are persistent.

Some Linux distributions set-up default routes in the '/etc/sysconfig/static-routes' file.