| > 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 *Groan* another distribution? My third. Okay. Another question for the list: can Linux cum Dachstein a) alias the eth0 (external) interface to multiple ip numbers (in SCO unix we use 'ifconfig alias', and b) pass along somehow (to ipchains or whatever) which ip number the packet arrived with? If so, I suppose I could use ipchains to REDIRECT to a local port, and then portfw to push it to the right machine. Well. NYZ -- _________________________________________ 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
