I think that 'route add -net 172.16.4.0 netmask 0xffffff00 gw 172.16.3.10' should do the trick HTH > > Hello, > > I did the 'ip addr' command. The result is as follows: > > [root@localhost root]# ip addr > 1: lo: <LOOPBACK,UP> 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: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100 > link/ether 00:60:97:df:8a:82 brd ff:ff:ff:ff:ff:ff > inet 172.16.4.2/24 brd 172.16.4.255 scope global eth0 > > 3: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100 > link/ether 00:06:5b:b5:86:a9 brd ff:ff:ff:ff:ff:ff > inet 172.16.3.10/24 brd 172.16.3.255 scope global eth1 > > > Issue: > > Is there a way so that I can forward the packets from the 172.16.4.0 network without having its IP address changed to 172.16.3.10, which is the so called "external interfce" for me. > > > Network set up: (Strictly private) > > The redhat 9 gateway forwards traffic between two private networks. The network topology goes like this: > > 172.16.8.0/24 ------------ router ----------- 172.16.3.0/24 ------- | Redaht 9 | ------- 172.16.4.0/24 > > This is a strictly private network setup for doing some tests. > > > I had posted this question earlier: > ----------------------------------- > > Hello, > > I am a fairly new person in Linux networking. > > The issue I got some responses was as follows: > ------------------------------------------------------- > I have had some good help to enable IP forwarding on my Redhat 9 > gateway with the rule: > > [CODE]iptables -t nat -A POSTROUTING -o eth1 -j SNAT --to-source 172.16.3.10[/CODE] > > This rule forwards the traffic from the internal network (172.16.4.0/24) to the > outside trhough the NIC with IP address 172.16.3.10. > > Problem: > > But I feel that the internal IPs are being forwarded with the IP address of the > external NIC of the gateway. > > It would be helpful if I could have a way to keep the internal IP address > (172.16.4.0)as it is without being substituted with the gateways IP > address(172.16.3.10). This is because I want the external users to see the > internal machines(172.16.4.0 network) as it is. > > Please advise. > > Thank You. > > Menon > -- Cordialement, Jean-Christophe VALIERE -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
