Snort mailing list archives

Re: [commercial] Re: Snort alarm sameip


From: Philip Edwards <phil.e () clara net>
Date: Tue, 29 May 2012 11:58:34 +0100


In the payload section the server IP =, your IP, Client IP and relay IP are all the same so that's the answer.
Thanks very much.

Phil.



On 26 May 2012, at 17:14, Balasubramaniam Natarajan wrote:

Strange what do you see in the payload section ?

On Sat, May 26, 2012 at 5:42 PM, Philip Edwards <phil.e () clara net> wrote:

Hi,

Can anyone hazard a guess why the sameip keyword is triggering an alarm on a DHCP request.
The source is 0.0.0.0 the destination is 255.255.255.255
The rule is the default: bad-traffic rule

alert ip any any -> any any (msg:"BAD-TRAFFIC same SRC/DST"; sameip; reference:bugtraq,2666; reference:cve,1999-0016; 
reference:url,www.cert.org/advisories/CA-1997-28.html; classtype:bad-unknown; sid:527; rev:8;)

phil@Rangoon:~$ snort --version

  ,,_     -*> Snort! <*-
 o"  )~   Version 2.9.2 IPv6 GRE (Build 78)
  ''''    By Martin Roesch & The Snort Team: http://www.snort.org/snort/snort-team
          Copyright (C) 1998-2011 Sourcefire, Inc., et al.
          Using libpcap version 1.1.1
          Using PCRE version: 8.12 2011-01-15
          Using ZLIB version: 1.2.3.4



I could add exceptions to filter this out but would i like to know why it's being triggered.

Thanks

Phil Edwards



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-- 
Regards,
Balasubramaniam Natarajan
www.etutorshop.com/moodle/


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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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