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
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