HI I have a cisco 803 ISDN router with a fixed IP from my ISP. I have the IP + FW feature set and am struggling to setup a nat connection that allows me to run an internal private web server and mail server and open it up to the web.
I have tried various settings and am probably getting confused.
BAsically I have the following interfaces
ROUTER
ethernet interface 0 192.168.0.100 255.255.255.0
Dialer 1 Interface x.x.x.x 2555.255.255.0 (assigned the IP from my ISP)
Local LAN
Web Server 192.168.0.99
Mail Server 192.168.0.98
various lan hosts 192.168.0.1 to 192.168.0.50
POLICY
allow all internal connections out to the net
allow only connections in to the web and mail servers
deny everthing else in
I have only 1 public IP address and that is assigned to the Dialer 1 interface. My ISP does not block any ports so connecting to my x.x.x.x address on 80 or 25 or whatever ports I configure in the servers should be able to get through. However I cannot get this to work and need some advice as to the exact setup of the access-list and IP nat statements.
Hope someone can help.
Regards
Stephen