Security Basics mailing list archives
Re: ICMP [ping]
From: "J. Oquendo" <segment () antioffline com>
Date: Fri, 5 Sep 2003 15:50:45 -0400
http://www.phoneboy.com/fom-serve/cache/530.html Maybe that'll help didn't look at the start of thread. ------------------------------------------------------- I don't know, if it was mentioned in one of the other replies, but there is also a technique known to portscan hosts behind a firewall by allowing icmp code 3 replies (Port unreachable) using a specially crafted TTL field. regards, andreas ------------------------------------------------------ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Jesus Oquendo sil @ disgraced . org sil @ antioffline . com segment ... antioffline . com PGP Fingerprint 39A7 24C6 A9A0 6C67 96CA 0302 F1D3 2420 851E E3D0 http://www.antioffline.com http://www.politrix.org You're free. And freedom is beautiful. And, you know, it'll take time to restore chaos and order, order out of chaos. But we will." George W. Bush Washington, D.C., April 13, 2003 --------------------------------------------------------------------------- Attend Black Hat Briefings & Training Federal, September 29-30 (Training), October 1-2 (Briefings) in Tysons Corner, VA; the world's premier technical IT security event. Modeled after the famous Black Hat event in Las Vegas! 6 tracks, 12 training sessions, top speakers and sponsors. Symantec is the Diamond sponsor. Early-bird registration ends September 6.Visit us: www.blackhat.com ----------------------------------------------------------------------------
Current thread:
- Re: ICMP [ping] J. Oquendo (Sep 05)