Destination port.
-`--from` `(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)` ('default =' `outside`)::
+`--from` `(host|outside|vm\d+|ct\d+|([a-zA-Z][a-zA-Z0-9]{0,9})/(\S+))` ('default =' `outside`)::
Source zone.
Source port.
-`--to` `(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)` ('default =' `host`)::
+`--to` `(host|outside|vm\d+|ct\d+|([a-zA-Z][a-zA-Z0-9]{0,9})/(\S+))` ('default =' `host`)::
Destination zone.