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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.bhp.com.au!mel.dit.csiro.au!munnari.OZ.AU!news.ecn.uoknor.edu!paladin.american.edu!gatech!news.mathworks.com!news.kei.com!nntp.coast.net!howland.reston.ans.net!tank.news.pipex.net!pipex!btnet!news.euro.net!usenet From: Gary Howland <gary@kampai.euronet.nl> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: ip-masq Date: Tue, 27 Feb 1996 11:58:57 +0100 Organization: Kampai Lines: 24 Message-ID: <3132E3F1.446B9B3D@kampai.euronet.nl> References: <4gp8o0$hj1@shellx.best.com> <4gr0kb$d4@uriah.heep.sax.de> NNTP-Posting-Host: p327.asd.euronet.nl Mime-Version: 1.0 Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0b6a (X11; I; BSD/386 uname failed) J Wunsch wrote: > > Ed Hudson <elh@shellx.best.com> wrote: > > > i'm looking for a port of the linux ip-masquerading > > software (to FreeBSD!), or a package that allows similar > > functionality. > > What exactly is this for? IP aliasing? RTFM ifconfig(8) for this. No, I don't think it's for IP aliasing, I think it is a method of allowing many machines to access the Internet through a dial up connection with only one IP addr. What happens is that the unix box acts like a router, but changes all outgoing IP src-addresses to it's own, and changes the dst-addresses on incoming packets before sending them on their way to the local machines. It's a little more complicated than it sounds since a database has to be maintained for all TCP connections. Also, it doesn't work with UDP. Then again, I may be totally wrong - I'm guessing as to what masquerading is. Gary