I'm not sure what you mean with "host and domain patch" or "host and domain window". Are you using FreeBSD or are you using pfSense as was mentioned in another thread.
If you want to add a default route ("gateway"), then you can do so with the
route(8) command, for example:
# route add default 192.168.1.1.
If this is not the answer you're looking for, then please give us more information, such as:
- What system you are running.
- What exactly are you trying trying to do? And what doesn't work?
- Your network topology.
- What you already tried, and error messages if that failed (if any).
- Anything else of use you can think of.