PAM
Port-to-Address Mapping is a advantageous affection that goes forth with CBAC. It allows you to specify that a accurate appliance that CBAC commonly expects to use a acclaimed TCP or UDP anchorage will use some added anchorage instead. For example, it is almost accepted to remap HTTP servers or POP Mail applications to a altered TCP port. This is sometimes done, for example, to abstain battle with absolute applications. For example, accept you already accept a committed web server, and you are appliance PAT abode translation. Again all entering cartage on TCP anchorage 80 will be automatically redirected to this absolute web server. If you capital to add a additional server for a altered application, again you would either charge addition all-around IP abode or run the additional server on a altered TCP port.