DGN3500 continuos logs

Hi all,
In the last couple of days I am getting continuos security alert emails from my router like these ones

TCP Packet - Source:192.xxx.x.x. Destination:77.232.10.224 - [PORT SCAN]
TCP Packet - Source:192.xxx.x.x. Destination:81.1.193.116 - [PORT SCAN]

When they come from outside I usually don't worry but this time
the source should be my netgear wifi extender or something attached to it, destination is always changing.

Thank you