Hi there,
I'm using ZoneAlarm Extreme Security version 9.3
On the Firewall log I can see that something is trying to access a destination IP:
81.200.64.52:445. At least twice every 30 minutes

This IP is outside of any of my domains.
The 'program' column is empty for this log.

I have checked the who is of this IP. First time I checked it: Russia (Moscow), second time from the UK (Unknown).

Does anybody know what the source could be of these attempts?

Thanks!