mport or multiport?
jengelh at linux01.gwdg.de
Tue Jul 12 14:48:12 CEST 2005
> --ports port[,port[,port...]]
> Match if the both the source and destination ports are
> equal to each other and to one of the given ports.
There are few daemons which bind to the portnumber they are listening on.
BIND could be configured to use a fixed port (e.g. 53) as the source port, and
thus would be a possible use for --ports, because most destination ports for
dns are 53, _too_.
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