With a Cisco 877 Router I want to make a setup in which the outside address is translated when using port forwarding to an the inside address.
The port forwarding is working like it should, but I don't know if it's possible to combine this with the NAT of the outside address. I guess it should have some 'Static NAT' on the outside (ip nat outside source ...) but this has to be combined with an access-list which is already used in combination with the "ip nat inside source"-command...
Can this be done, preferably for specific port translations ?
At the moment the port forwarding is made with the following commands:
ip nat inside source static tcp 192.168.100.2 8234 interface Dialer1 8234
ip nat inside source static udp 192.168.100.2 8234 interface Dialer1 8234
ip nat inside source static tcp 192.168.100.3 4321 interface Dialer1 4321
ip nat inside source static tcp 192.168.100.3 4421 interface Dialer1 4421
Can I establish that for the 4321 & 4421 the 'server' retrieves the address of the router (or one of the NAT-pool) ; and on the other server it may be the original external address (but if this isn't possible ; translation may be always...).
I hope the questions is clear enough, so anyone can help me...