[Snort-users] Local alert for website traffic not working

Martin Holste mcholste at ...11827...
Mon Jun 20 16:03:10 EDT 2011

You should be using the http preprocessor.  Add http_uri as a content
modifier like this:
content:"ebay.com"; http_uri;
See if that improves things.  I would also change the header to use
$HTTP_PORTS like this
alert tcp any any -> any $HTTP_PORTS
and verify that 80 is included in $HTTP_PORTS.

On Mon, Jun 20, 2011 at 2:00 PM, Ryan Pettigrew <rino655 at ...11827...> wrote:
> Hi guys,
> I have recently been trying to get a local rule working that would alert
> when a user accesses a certain webpage. As a test rule, I added the
> following line in my local.rules file:
> alert tcp any any -> any any (msg:"test eBay rule"; flow:established;
> content:"ebay.com"; sid:1000002;rev:1;)
> After restarting snort and barnyard and going to the website, I am not
> seeing any alerts from snort.
> I am certain that other web rules are working because the following local
> rule alerts just fine:
> alert tcp any any <> any 80 (msg: "Test web activity"; sid:1000001;)
> Is there an issue with the way I am writing the ebay rule or is there any
> other way to debug what may be failing to trigger an alert? If anyone has
> any insight on how to get a rule like this to work I would appreciate the
> assistance.
> Thanks,
> --
> Ryan Pettigrew
> ------------------------------------------------------------------------------
> EditLive Enterprise is the world's most technically advanced content
> authoring tool. Experience the power of Track Changes, Inline Image
> Editing and ensure content is compliant with Accessibility Checking.
> http://p.sf.net/sfu/ephox-dev2dev
> _______________________________________________
> Snort-users mailing list
> Snort-users at 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
> Please see http://www.snort.org/docs for documentation

More information about the Snort-users mailing list