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Sophos XG - Block by User Agent

Hi There,

 

We are looking for a way to block a specific user agent from being allowed through the firewall.. i cant see any way to do this?

 

The user agent is: user_agent="AppleExchangeWebServices/807 AddressBookSourceSync/2421.27"

 

Id rather avoid creating a IP block on the XG rule as there could be other legitimate traffic coming from this source.

 

Thank you



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  • Hi,

    There's no way to create a custom application signature in Sophos XG. You will have to block it with a custom IPS Signatures.

    Can you try out this (horrible) made signature ? You can create a Custom IPS Signature inside the Intrusion Prevention Tab, at Custom IPS Signatures.

     

    content:"|41 70 70 6c 65 45 78 63 68 61 6e 67 65 57 65 62 53 65 72 76 69 63 65 73|";

     

    It should look like this:

    After creating it, you can apply it on a IPS Policy, then on a Firewall Rule.

     

    Here's the result of the IPS Engine matching correctly the signature. (I've change my browser user agent to it, to see if it worked.)

     

    Thanks!