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Network Security Snort-Signatures
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Re: [Snort-sigs] False +VES COMMUNITY MISC BAD-SSL tcp detect,Sig ID,100

Subject: Re: [Snort-sigs] False +VES COMMUNITY MISC BAD-SSL tcp detect,Sig ID,100000137
Date: Tue, 27 Sep 2005 05:36:25 -0600
same here... lots of FP's.

------------------------

Hmmm... no doc file or references for this rule so I don't know what it is 
trying to detect.  
The content trigger is *very* short (2 chars) at start of packet and it looks 
at all traffic 
except port 139.

Anyway it is generating many thousands of alerts an hour on our network.  
Some TCP sessions are 
alerting several times a second.

I'm about to disable the rule.

This should give folk some idea of the size of the problem on our network

Time Window for this screen: Tue Sep 27 15:42:52 2005  to  Tue Sep 27 
16:02:06 2005   
Signature                     Total Events    IP Srcs IP Dsts Latest Timestamp
COMMUNITY MISC BAD-SSL tcp detect     8043    250     49      2005-09-27 
16:02:06
Russell

META
--------
SID   CID     TimeStamp               Signature
1     123879  2005-09-27 15:39:24     COMMUNITY MISC BAD-SSL tcp detect
Sig ID
100000137

Sensor Hostname                               Sensor Interface
monitor-itss.insec.auckland.ac.nz     ITSS sector switch

IP
--------
Source Address        Dest Address    Ver     Hdr Len
130.216.48.6  130.216.196.105 4       5
TOS   length  ID      flags   offset  TTL     chksum
0     156     22632   2       0       62      59859

Resolved Source
jones.math.auckland.ac.nz

Resolved Dest
xt5.scitec.auckland.ac.nz 

TCP
--------
Source Port   Dest Port       Seq             Ack             
58108         6002            3940890034      347283752
Offset        Reserved        Flags   Window  Checksum        Urgent Ptr
8     0               24      2896    44570           0

Options
--------
None


Flags
--------
RB 1  RB 0    URG     ACK     PSH     RST     SYN     FIN
                      X       X                               

DATA
--------
12000E0012002001FF00  ...... ...
00000400000020000500  ...... ...
08000000A00100007F01  ..........
000081010000E8000000  ..........
E7000000280100001F00  ....(.....
0000D601000019000B00  ..........
12002001000000001FA3  .. .......
4F400000000012002001  O@...... .
010000007F010000FF00  ..........
000000000000201F1040  ...... ..@
2B000100      +...




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