Re: International Domain Name access

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

Good catch…fixed is below..thanks RM! 

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY International Domain Name web access"; 
flow:to_server,established; content:"Host|3a|"; http_header; content:"xn--"; http_header; within:100; 
classtype:trojan-activity; metadata:ruleset community; 
reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; sid:10000052; rev:1;)


> Hi James,
>
> http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2007-3164
>
> Maybe missed first http_header on first content ?
>
> Regards
> Rmkml
>
>
> De : James Lay <jlay () slave-tothe-box net>
> À : Snort-sigs <snort-sigs () lists sourceforge net> 
> Envoyé le : Mercredi 8 mai 2013 0h58
> Objet : [Snort-sigs] International Domain Name access
>
> Just had a hootin good time here....never seen a host like this before:
>
> xn----4tbbdcdd.xn--p1ai
>
> The below should alert on web access...not sure if I'll sig up DNS 
> requests.
>
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY 
> International Domain Name web access"; flow:to_server,established; 
> content:"Host|3a|"; content:"xn--"; http_header; within:100; 
> classtype:trojan-activity; metadata:ruleset community; 
> reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; 
> sid:10000052; rev:1;)
>
> Maybe useful, maybe not.
>
> James
>
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------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and 
their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may

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