Re: snort classification Question

[James Lay <jlay () slave-tothe-box net>]

Mohamad,

I think in this case, you are the person who can help yourself :)  This is the link that discusses class types found in 
snort:

http://manual.snort.org/node31.html#SECTION00446000000000000000

That being shown, some class types are a bit subjective.  Let's take "policy-violation" as an example.  Let's say I see 
an alert for hotmail access:


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET POLICY Hotmail Message Access"; flow: 
to_server,established; content:"hotmail.msn.com"; http_header; content:"/cgi-bin/getmsg?msg=MSG"; http_uri; 
reference:url,doc.emergingthreats.net/2000036; classtype:policy-violation; sid:2000036; rev:13;)


Now….does my organization have a policy against using hotmail?  If so, then this is a valid alert, and I need to go 
talk to someone.  If not, then this isn't relevant, and I should disable this rule.

At my work I use sguil and I've lumped a lot of these class types into a single category, "non=malicious".  Read the 
link above, play around, and look at the actual packet content of the alert to see how it fits into a class-type.  Hope 
that helps.

James



On Aug 22, 2012, at 2:23 AM, mohamad hosein jafari <smhjafari68 () gmail com> wrote:

> who can help me in my needs?
>
> On Tue, Aug 21, 2012 at 9:32 PM, mohamad hosein jafari <smhjafari68 () gmail com> wrote:
> I need more information about these classtypes :
> """
> tcp-connection
> unknown
> protocol-command-decode
> icmp-event
> web-application-activity
> non-standard-protocol
> policy-violation
> """
> I need your help in these classtypes and I have more information about and some alert that was in these categories
>  
> Thanks
>
>
>  

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