Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Snort-Signatures
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

[Snort-sigs] False Positives on Rule 2050

from [John Duksta] Network Security [Permanent Link]
Subject: [Snort-sigs] False Positives on Rule 2050
Date: Tue, 14 Sep 2004 16:36:51 -0400 
Rule:  MS-SQL version overflow attempt 
Sid: 2050

Summary: SID 2050 FP's on DNS reply traffic with ephemeral port 1434

--
Impact: Many FP's

Possible solution: change source port to !53

alert udp $EXTERNAL_NET !53 -> $HOME_NET 1434 (msg:""MS-SQL version
overflow attempt"";
content:""|04|""; offset:0; depth:1; dsize:&gt;100;
reference:nessus,10674; reference:cve,CVE-2002-0649;
classtype:misc-activity; sid:2050; rev:1;)

A better solution would be to further refine this sig, but this would
reduce a fair number of FP's.


-------------------------------------------------------
This SF.Net email is sponsored by: thawte's Crypto Challenge Vl
Crack the code and win a Sony DCRHC40 MiniDV Digital Handycam
Camcorder. More prizes in the weekly Lunch Hour Challenge.
Sign up NOW http://ad.doubleclick.net/clk;10740251;10262165;m
_______________________________________________
Snort-sigs mailing list
Snort-sigs@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/snort-sigs
[More with this subject...]




<Prev in Thread] Current Thread [Next in Thread>
  • [Snort-sigs] False Positives on Rule 2050, John Duksta <=
Previous by Date:  Re: [Snort-sigs] what's the type of Pattrem matching slgorithm in sonrt???, Daniel Roelker
Next by Date:  [Snort-sigs] Bleedingsnort.com Daily Update, matt
Previous by Thread:  [Snort-sigs] False positives on FTP command 100 character limit, Sander Steffann
Next by Thread:  [Snort-sigs] which new tags with which snort version?, Chris Kronberg
Indexes:  [Date] [Thread] [Top] [All Lists]