I have a need to route all LAN traffic through a PC which would have monitoring software to check if all our internet traffic is legitimate and which clients are using it the most.
I am using a Windows XP Pro SP3 machine with 2 NICs.
The public NIC (internet) is 192.168.1.4 connecting direct to the internal IP (192.168.1.254) of the ADSL router.
The LAN NIC is 192.168.10.1 with the LAN clients using a DHCP server to get their IPs on the 192.168.10.x network
I have enabled IPenableRouter in the registry of the XP machine.
From the XP PC I can get internet access and also ping the clients on the 192.168.10.x network.
Internet sharing is NOT an option as it uses a class C network and would upset the LAN subnet particularly the fixed IP machines and printers etc.
How do I get the LAN clients to access the internet through the XP machine?
I assume that I would need a persistant route or two but am having difficulty working out exactly what is required I have no experience in routing.
It is probably a very simple matter for the right person.
Any help would be greatly appreciated