Ethernet to Token Ring Router

[ag6969]

I am using RedHat 7.2 and I can't get it to route packets between the 2 interfaces. You can probably guess by the title that I am trying to route traffic between a token ring net and an ethernet network. Both interfaces are reachable on their respective network, but won't route packets. I can ping addresses on either side from the Linux box. I have tried to enable ip forwarding by doing this:

echo 1 > /proc/sys/net/ipv4/ip_forward
I have also entered in static routes for each card.
This is what I did for the static routes:
(TOken ring interface = 10.0.0.l, ethernet=192.168.0.5)

route add -net 10.0.0.0 netmask 255.0.0.0 tr0
route add -net 192.168.0.0 netmask 255.255.255.0 eth0

I still get nothing, if anyone has any suggestions, I would really appreciate the help.
Thanks

 

[ifincham]

Hi,



What do you get from :



/sbin/route

or

/sbin/ip route (if you have the iproute rpm installed)



From what you say it sounds fine so I'd guess that its the firewalling stopping forwarding. Redhat 7.x comes with a simple ipchains based firewall called lokkit and that may be blocking the packets :



/sbin/ipchains -L



.. that should tell you what the active rules are. Under ipchains forwarded packets go through three chains (input -> forward -> output) so any of those rules could be blocking. If so, you can admin lokkit with '/usr/sbin/lokkit' and whats probably easiest is to set those two interfaces as 'trusted'. Otherwise you can turn the whole thing off :



/etc/rc.d/init.d/ipchains stop (immediately)



/sbin/chkconfig --level 2345 ipchains off (permananent off at all runlevels)



Hope this helps