Creating A Custom Service - Watchguard Firebox SOHO 6 User Manual

3 Locate a pre-configured service, such as FTP, Web, or Telnet.
Then select either Allow or Deny from the drop-down list.
The previous illustration shows the HTTP service configured to allow
incoming traffic.
4 Type the trusted network IP address of the computer to which
this rule applies in the applicable field.
The illustration shows the HTTP service configured to allow incoming
traffic to the computer with IP address 192.168.111.2.
5 Click Submit.

Creating a custom service

If you need to allow a service that is not listed in the common
services, configure a custom service based on a TCP port, a UDP
port, or a protocol.
User Guide
Configuring Incoming and Outgoing Services
63