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UTM 9 enabling promiscuous mode

I have installed Sophos UTM 9 on a single Nic box with the intent it can start reporting on internet usage.

 

I don't need firewall or web protection at this stage.

My house is running on a TP-Link layer 2 switch with the internet router connected on port 1 of the switch.

I have setup the managed switch to port mirror all (ingress/egress) traffic to port 2 which is where the UTM9 box is setup.

I would expect somewhere I need to enable promiscuous mode so the UTM will start logging/reporting all traffic and not just traffic to itself. Where can I do this?

Is this possible? Would enabling stop the UTM being accessed over the network?

 

If this is not, How can I achieve the ability to report of source/destination internet traffic with a single nic box.

 

Thanks



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  • Hi, Paul, and welcome to the UTM Community!

    Just off the top of my head, I would give all of the devices a default gateway of the IP of the UTM and give the UTM the default gateway of the IP of the internet router. I wouldn't use port mirroring at all as that would defeat the UTM's ability to measure things.

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • Hi, Paul, and welcome to the UTM Community!

    Just off the top of my head, I would give all of the devices a default gateway of the IP of the UTM and give the UTM the default gateway of the IP of the internet router. I wouldn't use port mirroring at all as that would defeat the UTM's ability to measure things.

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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