Snort mailing list archives
Re: Snort Abend after BAD-TRAFFIC
From: Jason Haar <Jason.Haar () trimble co nz>
Date: Mon, 22 Mar 2004 08:39:24 +1200
On Mon, 2004-03-22 at 07:59, Mark.Schutzmann () Omron com wrote:
Mar 21 13:56:09 OEI-RHLXSnort snort: [1:528:4] BAD-TRAFFIC loopback traffic [Classification: Potentially Bad Traffic] [Priority: 2]: {TCP} 127.0.0.1:80 -> 209.176.3.124:1577
Wow - that's a weird one. This is TCP traffic between a valid address and a loopback address. Unless your snort box is actually on address 209.176.3.124, that shouldn't happen. I've seen tonnes of broken software (Compaq InSight Manager for starters) produce loopback traffic before - but only ICMP and UDP - neither of which require the establishment of a "session" to operate (unlike TCP). I mean, this says that 209.176.3.124 has a route to the 127 network that passes by your Snort IDS sniffer, and that a Web server is responding OUT ITS ETHERNET CARD to such connections. This sounds nearly impossible. Is 209.176.3.124 the IP address of the Snort box? Then it all makes sense... -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +64 3 9635 377 Fax: +64 3 9635 417 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1 ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort Abend after BAD-TRAFFIC Mark . Schutzmann (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Jason (Mar 21)
- <Possible follow-ups>
- Re: Snort Abend after BAD-TRAFFIC Mark . Schutzmann (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Jason Haar (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Frank Knobbe (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Jason Haar (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Jason Haar (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Jason (Mar 21)
- Re: Snort Abend after BAD-TRAFFIC Steve Thompson (Mar 23)