hi, I have two NIC in a linux-box rh7.3 with the sequent configuration: ######################################### ip link show 1: lo: mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eth0: mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:50:fc:65:20:ef brd ff:ff:ff:ff:ff:ff 3: eth1: mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:80:1e:08:07:b1 brd ff:ff:ff:ff:ff:ff ######################################### ip address show 1: lo: mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 brd 127.255.255.255 scope host lo 2: eth0: mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:50:fc:65:20:ef brd ff:ff:ff:ff:ff:ff inet 192.168.50.48/24 brd 192.168.50.255 scope global eth0 3: eth1: mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:80:1e:08:07:b1 brd ff:ff:ff:ff:ff:ff inet 192.168.60.48/24 brd 192.168.60.255 scope global eth1 ########################################## cat /proc/sys/net/ipv4/ip_forward 1 ########################################## I have stop the iptables and ipchains services and i can't route traffic from a NIC to the other one. Then I have enabled ipchains only, iptables only, ipchains and iptables at the same time but nothing works!! All the times I have restarted the network service. Can anyone help me?

first, Attention: Using both, ipchains and iptables might confuse the kernel: Use either iptables OR ipchains, but not the two together. Second, you will have to load the modules for masquerading/nat. There is no good in directly routing internal network adresses (p-ex. 192.168.x.x) to the internet. They aren't routed throu' the internet. Activating masquerading/NAT for the 2.2.x Kernel looks like this: ipchains –M –S 7600 30 10 /sbin/modprobe ip_masq_ftp.o A rule for the forwarding chain: ipchains –A forward –I $EXTERN –s 192.168.0.0/24 –j MASQ Note that these commands are Kernel 2.2.X & ipchains! After having set up NAT you won't have problems getting Internet-Requests from internel Network to external network and vice-versa. Questions? goto http://www.distantvoices.org/php/usermail.php

Uh, have overread something: You want to route inside: Have you added a routing table to the kernel: There should be something like this in the route.conf: 192.168.50.0 192.168.50.1 255.255.255.0 eth0 192.168.60.0 192.168.60.1 255.255.255.0 eth1 this tells the kernel how to reach each of the two networks. Sorry for inconvenience of having to read needless info! thomas