On 08/22/2002 11:35:53 AM "Chris Evans" wrote: >> c) if so, and given that ISP won't route packets from private >> addresses I'm sure, how do I get iptables to rewrite the passing on >> of the packages.
I have not done this exact config with two internal networks, but something close to: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE And don't forget an 'echo 1 > /proc/sys/net/ipv4/ip_forward I hear that getting two internal networks to talk to each other via a MASQ firewall is an interesting task. >> # /etc/network/interfaces -- configuration file for ifup(8), >> #auto eth1 >> #iface eth1 inet static >> # address 192.168.1.1 >> # netmask 255.255.255.0 >> # network 192.168.1.0 >> # broadcast 192.168.1.255 >> # gateway 217.34.100.197 Why comment these guys out (#)? How do they get configured? Don't think you need that gateway entry for the internal interfaces because your machine IS the gateway. Here's the important part: Post your /sbin/route -n from the firewall itself. Also post your ifconfig from the firewall.

