Snort mailing list archives
Re: ICMP Echo Replies & Unknowns?
From: "Matthew Collins" <Matthew.Collins () northernregistrars co uk>
Date: Thu, 28 Jun 2001 10:43:28 +0100
I get all sorts of this stuff too, also ICMP destination unreachable messages for packets we haven't sent. Most of this is fallout from DOS attacks & people spoofing our IP addresses.
"Sheahan, Paul (PCLN-NW)" <Paul.Sheahan () priceline com> 28/06/01 05:59:48 >>>
Every day, I see many "ICMP Echo Replies" and "ICMP unknowns" from random machines on the Internet. Some example traces are below...these packets came back to back three seconds apart (icmp unknown then icmp echo reply right afterward). Does anyone know why I would see so many of these? Could this come from a probing tool? I see so many, I'm trying to figure out what's going on! Thanks. **************************************************************************************** This message and any attachments are confidential to the ordinary user of the e-mail address to which it was addressed and may also be privileged. If you are not the addressee you may not copy, forward, disclose or use any part of the message or its attachments and if you have received this message in error, please notify the sender immediately by return e-mail and delete it from your system. Internet communications cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, arrive late or contain viruses. The sender therefore does not accept liability for any errors or omissions in the context of this message which arise as a result of Internet transmission. Northern Registrars Limited, Northern House, Woodsome Park, Fenay Bridge, Huddersfield. HD8 0LA. Tel: +44 (0) 1484 600900 Fax: +44 (0) 1484 600911 For more information visit our web site: http://www.northernregistrars.co.uk **************************************************************************************** _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: http://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- ICMP Echo Replies & Unknowns? Sheahan, Paul (PCLN-NW) (Jun 27)
- <Possible follow-ups>
- Re: ICMP Echo Replies & Unknowns? Matthew Collins (Jun 28)
- Re: ICMP Echo Replies & Unknowns? Phil Wood (Jun 28)