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Sophos UTM 9 Block External IP Address

Edvinas Kazakevicius

Hello,

Can anyone explain me how to block some external IP addresses to access my internal network?



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  • 0

    Well, by default just about everything is blocked so unless they have been given access, they don't have it.  Your question without context is pretty vague so I can really only give a vague answer unless you are experiencing something specific.  If you can be more specific, please include screenshots and logs of what you are having an issue with in UTM.

    You should never have a rule that has 'Any' in the 'Allowed Networks'.

    There is great information in Bob's rules guide: Rulz - Recommended Reads - UTM Firewall - Sophos Community

    If you have an internal client computer accessing a specific IP, you could create a blackhole route.

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  • 0 in reply to Amodin

    Hi,

    I have a few external IP addresses that can attack our network and want to block them completely. 

  • 0

    Labas Edvinas and welcome to the UTM Community!

    As Amodin suggests, look at th Rulz thread - specifically #2.  Any luck with that?

    Cheers - Bob

     
    Sophos UTM Community Moderator
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