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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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Top Replies

  • 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!

    Jump to answer
Parents
  • 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!


    If a post solves your question use the 'Verify Answer' button.

    XG 115w Rev.3 8GB RAM v19.5 MR1 @ Home.

Reply
  • 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!


    If a post solves your question use the 'Verify Answer' button.

    XG 115w Rev.3 8GB RAM v19.5 MR1 @ Home.

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