I am seeing this error message in the logs on our TZ400 every day at (within 2 seconds) the exact same time from the same workstation WITHIN our network. What should I look for to be causing this? It looks suspicious to me.
Yes, that is what I did, but not sure what to look for. I watched the screen at that exact time and nothing popped or seemed to happen. I was hoping to learn what to look for, or where to look on the workstation.
@mcarey I would run a Packet-Monitor on the Firewall to check if the packets are indeed initiated from the network and by comparing the MAC address to make sure from the mentioned Workstation.
If the packets are coming from this Workstation I would have a look in the Sysinternals arsenal (if it's on Windows) to find a tool which shows me what process is trying to connect.
Answers
Look at the workstation.
Yes, that is what I did, but not sure what to look for. I watched the screen at that exact time and nothing popped or seemed to happen. I was hoping to learn what to look for, or where to look on the workstation.
There is nothing that i can see in the Task Scheduler that runs at this time of day.
@mcarey I would run a Packet-Monitor on the Firewall to check if the packets are indeed initiated from the network and by comparing the MAC address to make sure from the mentioned Workstation.
If the packets are coming from this Workstation I would have a look in the Sysinternals arsenal (if it's on Windows) to find a tool which shows me what process is trying to connect.
It's a bit of a detective work to do here.
--Michael@BWC