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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.kei.com!news.mathworks.com!tank.news.pipex.net!pipex!dispatch.news.demon.net!demon!palmer.demon.co.uk!palmer.demon.co.uk!not-for-mail From: gary@palmer.demon.co.uk (Gary Palmer) Newsgroups: comp.unix.bsd.freebsd.misc,comp.protocols.tcp-ip Subject: Re: Faking Source IP Addresses? Date: 26 Sep 1995 02:03:01 +0100 Organization: none Lines: 19 Message-ID: <447jg5$1v3@palmer.demon.co.uk> References: <43te4l$ug@galaxy.ee.rochester.edu> <440kbd$hvj@uriah.heep.sax.de> NNTP-Posting-Host: pc.my.org X-NNTP-Posting-Host: palmer.demon.co.uk Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:6441 comp.protocols.tcp-ip:39147 In article <440kbd$hvj@uriah.heep.sax.de>, J Wunsch <j@uriah.heep.sax.de> wrote: >iijppp does it, i think. Umm. That's partly true, I suppose. All iijppp does is send data up into the kernel via the tun device, and send data it receives out via the defined serial line, presumably to a modem or to another computer. If you are talking about doing it on ethernet, you'll need access to the bpf devices in /etc to write raw packets out. That's probably the best way to do it, but also a massive security hole as any user level process on the machine could open the device and do it. Gary -- FreeBSD Core Member E-Mail: Gary@Palmer.Demon.co.uk, gpalmer@FreeBSD.org