Snort mailing list archives
Re: writing rule with uricontent keyword
From: Brian <bmc () snort org>
Date: Tue, 1 Mar 2005 14:06:57 -0500
On Mon, Feb 28, 2005 at 02:39:08PM -0500, Jiju Menon wrote:
I tried to get an alert with a test rule using uricontent: alert tcp $HOME_NET any -> $EXTERNAL_NET 80 (msg:"yahoo.com"; uricontent:"yahoo.com";nocase;) The rule seems not to detect a connection made to yahoo.com. Can anyone help me to get this rule working?
While the URL http://www.yahoo.com/foo.html, your packet will look something like this: GET /foo.html HTTP/1.1\r\nHost: www.snort.org\r\n\r\n You need to write your rule to look something like this: alert tcp $HOME_NET any -> $EXTERNAL_NET 80 (msg:"yahoo.com"; content:"Host|3a|"; nocase; pcre:"/^Host:\x3a.*yahoo.com/mi";) Brian ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&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:
- writing rule with uricontent keyword Jiju Menon (Feb 28)
- Re: writing rule with uricontent keyword Matt Kettler (Feb 28)
- Re: writing rule with uricontent keyword Edin Dizdarevic (Feb 28)
- Re: writing rule with uricontent keyword Brian (Mar 01)
- Re: writing rule with uricontent keyword Matt Kettler (Feb 28)