On outbound NAT rule edit, hide ports when protocol does not use ports.
In other rule types, the fields for ports are hidden when selecting a protocol that does not use them. The edit page for outbound NAT should do this, too.
Updated by Chris Palmer about 11 years ago
2.0-BETA4 (i386)built on Sat Nov 20 05:54:55 EST 2010 using Firefox.
Testing Firewall/NAT/Outbound Add a mapping...
Switching "Protocol" to anything other than "Any", "TCP", "UDP", or "TCP/UDP" does cause the "Port" entry boxes to vanish from view...