Date: Tue, 19 Sep 2000 16:42:16 +0200 From: Yann Berthier <Yann.Berthier@hsc.fr> To: freebsd-hackers@FreeBSD.ORG Subject: Re: traceroute using tcp to a port? Message-ID: <20000919164216.J65102@hsc.fr> In-Reply-To: <00ac01c02218$7f91e080$0e00a8c0@neland.dk>; from leifn@neland.dk on Tue, Sep 19, 2000 at 11:00:57AM %2B0200 References: <00ac01c02218$7f91e080$0e00a8c0@neland.dk>
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On Tue, 19 Sep 2000, Leif Neland wrote: > If I understand correctly, traceroute works by sending pings with ttl=1, > ttl=2,ttl=3 etc and records the names of the routers where the ttl reaches > zero. > > However, an increasing number of sites believes in security by obscurity, > and blocks for pings. > > Would the same technique work for making a telnet to port 80 with ttl=1, > ttl=2 etc? > > Leif Of course it works, and very well. You should try hping (http://www.kyuzz.org/antirez/hping/) which is a _very cool_ tool developped by Antirez. With it you could do (among many things) traceroute over tcp. regards, -- Yann BERTHIER Yann.Berthier@hsc.fr Network Security Consultant Herve Schauer Consultant To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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