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Sophos UTM - No internet after restart

Aren Kern

Hello,

First time poster so forgive any mistakes but I am having trouble whenever I restart my UTM.  If I do a restart, my devices on the network cannot access the internet.  It will show me "State = Down, Link = Up".  There is nothing wrong with my cable modem.  I usually solve this by restarting and restarting the UTM over the course of a day or so, and one of those times it comes back up.  Is there any way I can check what is going on?  Anyone have any ideas?

I should state that this is a new issue.  I had my UTM and cable modem in a different part of the house and never had an issue after a restart.  But did some re-arranging and moved the location. This only started once I moved both the cable modem and the UTM.  (I can't see why that would cause an issue)

I am using:

  • Sophos UTM 9.703.3 - on an old min-pc (Zotac)
  • One internal NIC (eth0) - connects to switch
  • External NIC (eth1) - via USB port connects to cable modem (TPLINK)

 

Thanks!



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  • 0

    Hello,

     

    I can confirm a similar problem with my TPLink LTE router for my backup WAN.

    Sometimes the link failed suddenly after longer time, also after reboots of the UTM.

     

    One possible workaround was to login on the UTM admin web gui and refresh the ip / dhcp or disable/enable the interface.

    I remember there was a problem with the autonegotiation mode, after setting it manually to 1gbps it was fixed for me.

    After placing the tplink on the loft and linking to a HP switch the need for manually setting speed config was gone.

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  • 0

    Hello,

     

    I can confirm a similar problem with my TPLink LTE router for my backup WAN.

    Sometimes the link failed suddenly after longer time, also after reboots of the UTM.

     

    One possible workaround was to login on the UTM admin web gui and refresh the ip / dhcp or disable/enable the interface.

    I remember there was a problem with the autonegotiation mode, after setting it manually to 1gbps it was fixed for me.

    After placing the tplink on the loft and linking to a HP switch the need for manually setting speed config was gone.

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