[4092] in linux-net channel archive

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IP Address Translation

daemon@ATHENA.MIT.EDU (David C Niemi/Administrator/DCLinu)
Sun Aug 18 18:34:30 1996

Date: 	Sun, 18 Aug 1996 17:11:27 -0400 (EDT)
From: David C Niemi/Administrator/DCLinux/LUGMAN/WAUUG <niemi@wauug.erols.com>
To: linux-net@vger.rutgers.edu
In-Reply-To: <199608181556.QAA17205@snowcrash.cymru.net>


I have several people now interested in doing 1-1 address translation at a
router, including some large sites.  Can Linux do this now?  I have heard
some Cisco routers do it.

Network Address Translation differs from masquerading and proxying in that
each host has a unique IP address on the "outside" network, but may be
using a different address inside.  It would be sufficient to translate any
addresses in a large block to a different block of addresses in a 1-1
manner, though for migration purposes there may be a mix of addresses in
the "inside" and "outside" blocks on a temporary basis.

This sounds easy in general but may fail for things like talk which embed
IP addresses inside the data.

David
Niemi@linux.wauug.org      703-810-5538     Reston, Virginia, USA
------    Money talks, but it is wrong half of the time.    -----


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