Description
Our main router for internet access is a Cisco 800 series.
Port forwarding howto
Log in with root on 192.168.1.1
enable show config
Currently forwarded ports are listed in the lines beginning with "ip nat inside source static"
config terminal
Now add a new line similar to the existing ones, for example:
ip nat inside source static tcp <internal ip> <internal port> <external ip> <external port> extendable <enter> <ctrl>+z write memory
Check your result with
show config
Remove existing port forwarding rules
Copy a rule from "show config" and paste "no" in front of it.