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Monitoring Openvpn-Connection to Sophos UTM



Task was to find out who is logged in by openvpn to our Sophos UTM 9.

this does not give results

I could not find any hints in SNMP-output nor "cc get_objects" (this is for configuration not for monitoring).

this works

ssh [email protected]


Updated,Wed Mar 25 10:53:27 2020
Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since
openvpn-myuser1,,4333648,11695199,Wed Mar 2 06:58:51 2020
openvpn-myuser25,,9183690,57628351,Wed Mar 2 07:28:08 2020
REF_AaaUse99,,16113267,48635679,Wed Mar 2 05:01:58 2020

I am using this output to feed a webservice via a perl-script which gives me data for PRTG, my monitoring-tool with the sensor "Http Data Advanced"


prtg: {
  text: "openvpn-sophos"
  result: [
      value: 16,
      channel: "openvpn-connections-number"
      channel: "openvpn-myuser1"
      value: 1,

This is what you need to implement this solution

  • Extra Linux-Webserver which runs a perl-script (or other language to ssh to UTM and parse the output)
  • Open SSH in Sophos to the Linux Webserver for it to get the data for openvpn

firewall monitoring openvpn sophos

Created on Mar 25, 2020 12:12:42 PM


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