Omar D. Samuels wrote (on Thu, Jun 06, 2002 at 05:09:49PM -0500): | What do you mean, I still don't understand. | | > | One learns something new everyday... does PAT stand for Private Address | > | Translation? | > | > NAT = Network Address Translation (one to one). | > PAT = Port Address Translation (one to many). | > | > | Is it different from NAR (Network Address Retention)? | > | > Dunno. :-)
In NAT, the router essentially changes the source IP number to some other (presumably better :-) one, and makes no other changes. So, your network address is hidden, but you still need one public IP address for every host on your network. In PAT, the router changes the port number as well (to some random port number), and keeps track of a table consisting of: the original source IP number, and the port coded to the packet. The point is that the router can inspect the reply packet, check the table, and send it off to the machine that sent the source packet because it knows the port it arrived on. So, many hosts can use the same IP number. Both NAT and PAT have their uses; we use both here. -- _________________________________________ Nachman Yaakov Ziskind, EA, LLM [EMAIL PROTECTED] Attorney and Counselor-at-Law http://yankel.com Economic Group Pension Services http://egps.com Actuaries and Employee Benefit Consultants _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm ------------------------------------------------------------------------ leaf-user mailing list: [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
