Re: Need an efficient way to generate rules for URL Filtering

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

On Sat, 2015-03-21 at 17:01 +0000, Rodgers, Anthony (DTMB) wrote:
> I’m not sure that Snort is the best tool for this – have you
> considered a DNS blackhole?
>
>  
>
> --
>
> Anthony Rodgers
>
> Security Analyst
>
> Michigan Security Operations Center (MiSOC)
>
> DTMB, Michigan Cyber Security
>
>  
>
> From: Rishabh Shah [mailto:rishabh420 () gmail com] 
> Sent: Friday, March 20, 2015 08:05
> To: snort-users () lists sourceforge net
> Subject: [Snort-users] Need an efficient way to generate rules for URL
> Filtering
>
>  
>
>
> Hi Snort Team,
>
>
>  
>
>
> Hope you are doing well. 
>
>
>  
>
>
> I have a database of 1000 URLs that I want to block using Snort. Do I
> need to create 1000 separate rules to block each of them? Wouldn't
> there be a performance hit if I have a separate rule for each one of
> them(consider my database increases to 10K URLs)? Any alternatives
> that could achieve my aim?
>
>
>
>  
>
>
> FYI, this is how my rule looks today: 
>
>
> reject tcp any any -> any any (msg:"Blacklisted URL";
> content:"youtube.com"; http_uri; react: msg;)
>
>
>  
>
>
>
> -- 
>
>
> Regards,
>
>
> Rishabh Shah.
>
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel Website, sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for all
> things parallel software development, from weekly thought leadership blogs to
> news, videos, case studies, tutorials and more. Take a look and join the 
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users
>
> Please visit http://blog.snort.org to stay current on all the latest Snort news!


Ya that or run a proxy.

James

------------------------------------------------------------------------------
Dive into the World of Parallel Programming The Go Parallel Website, sponsored
by Intel and developed in partnership with Slashdot Media, is your hub for all
things parallel software development, from weekly thought leadership blogs to
news, videos, case studies, tutorials and more. Take a look and join the 
conversation now. http://goparallel.sourceforge.net/

_______________________________________________
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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!