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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.mel.connect.com.au!news.mel.aone.net.au!grumpy.fl.net.au!news.webspan.net!ix.netcom.com!newsfeeds.sol.net!news-xfer.netaxs.com!news.fast.net!uunet!in3.uu.net!199.60.19.15!news.island.net!nanaimo.island.net!cmott From: Charles Mott <cmott@srv.net> Newsgroups: comp.unix.bsd.freebsd.misc Subject: "Masquerading is Evil", part 3 Date: Thu, 9 Jan 1997 23:19:44 -0800 Organization: Island Internet Inc. - (604) 753-2383 Lines: 30 Message-ID: <Pine.LNX.3.95.970109230927.18188B-100000@nanaimo.island.net> NNTP-Posting-Host: nanaimo.island.net Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: cmott@nanaimo.island.net Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:33705 I have completed a number of structural modifications to the packet aliasing (masquerading) software for user mode ppp. Version 1.7 can be found at: http://www.srv.net/~cmott/alias.html Bug Fixes: (1) The software now handles out-of-order fragments. This doesn't affect too many people, butat least one expert thought it was important to do. To verify this, try pinging an external linux machine (which fragments backwards) from a computer behind the ppp host on your LAN. The example I use is: ping -s 5000 nanaimo.island.net A large packet has to be used in order to cause fragmenting. (2) It was not formerly possible to make an FTP data transfer between two machines which were both running the packet aliasing software. This was because of an overly restrictive condition that FTP transfers must originate from port 20. (3) An obsure IP checksum bug was isolated by Brian Somers and Martin Renters. This has been fixed.