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Custom Signature

Hi Team, I have requirement is to block the .txt file coming from outside through mail. The file with only spesific name like Cisco.txt Is ther anyway we can do in ips appliance ? Please help
1 REPLY

You have create one sig for

You have create one sig for service type: smtp, and for file attachment match a regex [Cc][Ii][Ss][Cc][Oo][.][Tt][Xx][Tt]

refer

http://www.cisco.com/web/about/security/intelligence/ips_custom_sigs.html

 

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