Posted 05 July 2012 - 05:40 AM
Are you actually experiencing network problems? Alot of these router firewalls give false-positives. 2 of the IPs (188.8.131.52 & 184.108.40.206) trace back to ADSL service from "Tellas.gr". I tried looking to see what country you are from, but could not find anything. If you're from Greece (.gr domain) and have service through "Tellas" or a similar provide, some of it may be from them ensuring you are "active" on their network.
Aslong as you have a firewall enabled and you're not actually experiencing problems - I wouldn't worry about it. It's many botnets and other malicious users constantly port scanning IP ranges. Nothing you can do about it.