Security Basics mailing list archives
Re: ICMP (Ping)
From: andreas <entmoot () gmx de>
Date: Fri, 5 Sep 2003 09:31:37 +0200
On Tue Sep 02 03:19PM, Paul Kurczaba wrote:
Are there any security issues for allowing a firewall/router to respond to Ping from the internet? -Paul Kurczaba
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 --------------------------------------------------------------------------- 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:
- ICMP (Ping) Paul Kurczaba (Sep 02)
- Re: ICMP (Ping) freeasabird_13 (Sep 03)
- Re: ICMP (Ping) Ansgar Wiechers (Sep 04)
- Re: ICMP (Ping) freeasabird_13 (Sep 05)
- Re: ICMP (Ping) Ansgar Wiechers (Sep 05)
- Re: ICMP (Ping) Tomas Wolf (Sep 08)
- Re: ICMP (Ping) Tim Greer (Sep 08)
- Re: ICMP (Ping) Ansgar Wiechers (Sep 04)
- Re: ICMP (Ping) freeasabird_13 (Sep 03)
- <Possible follow-ups>
- Re: ICMP (Ping) Jay Woody (Sep 03)
- RE: ICMP (Ping) Stuart (Sep 04)
- RE: ICMP (Ping) Tony Kava (Sep 04)
- RE: ICMP (Ping) Jay Woody (Sep 04)
- RE: ICMP (Ping) SMiller (Sep 04)
- RE: ICMP (Ping) Tim Greer (Sep 04)
- RE: ICMP (Ping) Gerard Marshall Vignes (Sep 05)
- RE: ICMP (Ping) Tim Greer (Sep 05)
- Re: ICMP (Ping) gregh (Sep 05)
- RE: ICMP (Ping) Tim Greer (Sep 04)