Re: Create rule to check illegal web access

[Antonin <antonin () libfy com>]

thanks for your answer.
I have a proxy server but my goal is not to block this kind of traffic
(it's already the case with the proxy).

I just want to be alerted when a user (or a malware, etc...) try to reach
this kind of website.
We have a SIEM tool, and we want to have an alert.


2012/7/19 Wei Chea Ang <weichea () gmail com>

> I think it will be easier if you use a proxy for this.
> On Jul 19, 2012 8:19 PM, "Antonin" <antonin () libfy com> wrote:
>
> > Hi guys,
> >
> > I need to create a specific rule to detect illegal web usage.
> > For example, I wan't to raise alert when users are going to websites with
> > warez, cracks, serials, torrent, etc...
> >
> > Here is what I do:
> > alert tcp $HOME_NET any -> any any (msg:"POLICY VIOLATION Illegal website
> > Usage"; flow:to_server,established; content:"torrent"; nocase;
> >  http_header; metadata:service http; classtype:policy-violation;
> > sid:1234567894; rev:5;)
> >
> > But I need to create one rule per keyword. Not very optimal.
> >
> > Do you have any other idea? Tips?
> >
> > Many thanks
> >
> > Antonin
> >
> >
> >
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-- 
Antonin
_________________________________

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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

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