Cisco Cisco ASA Linux SSH

Configure Port Forwarding on Cisco ASA

This post will show how to port forward a single port from the internet to the internal network. You can easily use the Cisco ASA Appliance GUI through a web browser or Cisco ASDM to create a static nat and an access rule but for those that need to do it from command line here we go:
  1. First login to your router through ssh or telnet and use the privilege mode enable.
  2. Next go to configuration mode by running configure terminal.
  3. Execute the following commands: (In this example we will open HTTP Port 80)
access-list outside_access_in extended permit tcp any interface outside eq 80
static (inside,outside) tcp interface 80 80 netmask
access-group outside_access_in in interface outside

Type exit to get out the configuration mode
Type write to save the changes to startup-config