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Re: Snort has different IPs than Wireshark
From: "Billy Marshall" <Billy.Marshall () state co us>
Date: Tue, 30 Nov 2010 12:42:45 -0700

Hi Russ,
You are absolutely correct. After some investigation it is base causing
the issues. I discovered that the database has the addresses correctly
stored and a dump form tcpdump and snort produce correct outputs. A
colleague of mine and I discovered Base has a small bug. It is detailed
in the attached document.
Base version is 1.4.4

 
 


-Bill Marshall
Network Services -
Governor's Office of Information Technology
1575 Sherman Street, Ground Floor G19
Denver, CO 80203
Phone: 303-866-5209
Email:  billy.marshall () state co us 

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Russ Combs <rcombs () sourcefire com> 11/30/2010 11:26 AM >>>
Just looking at your pcap it is hard to say but Snort and Wireshark are
in agreement on the addresses so maybe it is a Base issue.

On Tue, Nov 30, 2010 at 12:28 PM, Billy Marshall
<Billy.Marshall () state co us> wrote:



I have a massive amount of alerts that seem peculiar. Wireshark payload
dump from Snort has South African addresses but snort has RFC 1816
addresses.



Base output


DOS tcpdump tcp LDP print zero length message denial of service attempt

2010-11-24 06:00:01 
10.xxx.xxx.115 (
http://165.127.171.36/base/base_stat_ipaddr.php?ip=10.60.93.115&amp;netmask=32
):2049 
10.xxx.xxx.15 (
http://165.127.171.36/base/base_stat_ipaddr.php?ip=10.60.72.15&amp;netmask32
):646 
TCP 


whois info:

Src 163.197.215.3 Dst 163.196.128.15

ZA, South Africa



Any Ideas

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Attachment: Base-pcap-problem.doc
Description:

------------------------------------------------------------------------------
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Tap into the largest installed PC base & get more eyes on your game by
optimizing for Intel(R) Graphics Technology. Get started today with the
Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
http://p.sf.net/sfu/intelisp-dev2dev
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