port

Description

Specifies a port for a UDP or TCP packet.

Synopsis

{block | pass} {in | out} proto proto_value {to | from} address_scope port op port_value

proto_value is tcp or udp.

address_scope can be a unique IP address, an address space, or the keywords !, all, me, or any.

op is a mathematical operator. Wind River Firewall recognizes the operators defined in , which can be specified using mathematical signs or text.

Table A-1 :   Operators Valid with Port Keyword

Operator	Text Designation	Description
“=”	eq	equal
“!=”	ne	not equal
“<"	lt	less than
“<="	le	less than or equal
“>”	gt	greater than
“>=”	ge	greater than or equal to
“<>“	or	outside range
“><"	ir	inside range

For “<>“ and “><", the syntax is actually as follows:

port port_value op port_value

For example, a specification such as port 10000 “<>” 20000 means that all port numbers less than 10000 or greater than 20000 match the rule.

port_value is an individual port or an interval.