I have updated my Fedora Core 3 box to the latest versions (in the FC3 branch) and now have iptables-1.2.11-3.1.FC3 kernel-2.6.12-1.1381_FC3 and ip forwarding stopped working. Before the upgrade I had iptables-1.2.11-3.1 kernel-2.6.9-1.667 The configuration is this: machine A with FC3 ---------------- adsl modem -------------------- internet | | | machine B on a LAN The FC3 box was using iptables for ip ipforwarding in order to let 'machine B' access the internet using these rules: iptables --flush iptables -t nat --flush iptables --delete-chain iptables -t nat --delete-chain iptables -t nat --append POSTROUTING --out-interface eth0 -j MASQUERADE iptables -t nat --append POSTROUTING -s 192.168.10.0/255.255.255.0 -j MASQUERADE iptables --append FORWARD --in-interface eth1 -j ACCEPT echo 1 > /proc/sys/net/ipv4/ip_forward Now after the update these rules stopped working and nothing gets through from 'machine B', although pinging works between machines A and B both ways. Any ideas as to what to change in these rules to have the same effect as before the update?
