Re: new rule

[Joel Esler <jesler () sourcefire com>]

On May 24, 2013, at 2:51 PM, Chukhaltsetseg Shijirbaatar <sh_chukha () yahoo com> wrote:

> Alert tcp $HOME_NET 1024:65534 -> $EXTERNAL_NET 1024:65534 (msg: “P2P Bittorrent handshake”; flow: to_server, 
> established; content: “Bittorrent protocol”; offset:0; depth:19; classtype: policy-violation; priority: 1; sid: 
> 2000504; rev:1; )

This wouldn't be new to the ruleset:

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"PUA-P2P BitTorrent transfer"; flow:to_server,established; 
content:"|13|BitTorrent protocol"; depth:20; metadata:ruleset community; classtype:policy-violation; sid:2181; rev:8;)

has been in the ruleset now for about 10 years.  It's available for download in the community ruleset:  
http://www.snort.org/snort-rules

--
Joel Esler
Senior Research Engineer, VRT
OpenSource Community Manager
Sourcefire

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