Hi, Sorry, I forgot to mention that. Yes, the "echo 1 > /proc/sys/net/ipv4/ip_forward" has been set to run in rc.local script on every boot. Cheers, Paul --- Paul Lewis (paul.lewis@xxxxxxxxxxxxxxxxx) Part II Student Department Of Materials University Of Oxford -----Original Message----- From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Rob Sterenborg Sent: 15 January 2006 19:03 To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: RE: Network configuration > I have tried setting up routing using these commands: > > echo "ISP_1" >> /etc/iproute2/rt_tables > echo "ISP_2" >> /etc/iproute2/rt_tables > > ip route add 192.168.4.0/22 dev eth2 src 192.168.7.253 table ISP_1 > ip route add default via 192.168.100.253 table ISP_1 > ip route add 192.168.0.0/22 dev eth1 src 192.168.3.253 table ISP_2 > ip route add default via 192.168.20.253 table ISP_2 > > ip rule add from 192.168.7.253 table ISP_1 > ip rule add from 192.168.3.253 table ISP_2 > > However, this yielded no success. I have also tried a simple iptables > forwarding configuration (without the routing config above): > > iptables -A FORWARD -i eth0 -o eth2 -j ACCEPT > iptables -A FORWARD -i eth2 -o eth0 -j ACCEPT > iptables -A FORWARD -i eth1 -o eth3 -j ACCEPT > iptables -A FORWARD -i eth3 -o eth1 -j ACCEPT > > # default policy > iptables -P FORWARD DROP Not looking at your routing rules ; did you also do : echo 1 > /proc/sys/net/ipv4/ip_forward Gr, Rob
