On Thu, 2002-06-06 at 15:35, Nachman Yaakov Ziskind wrote: > 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.
As I understand it, netfilter (iptables) can do what you want, although the terminology and approach may be unfamiliar. Start here: http://www.netfilter.org/documentation/HOWTO//NAT-HOWTO.html The Bering branch of LEAF uses a 2.4 kernel with netfilter. Dachstein still uses a 2.2 kernel. -Richard _______________________________________________________________ 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
