I have just moved form ESET AV registered to a trial version of ESET smart security, primarily because I wanted the added firewall functionality. I have recently noticed outbound connections to 18.104.22.168 (MCAST-NET) via svchost and I am apparently unable to block these via the firewall regardless of what rules I try and apply. Does anyone have any insight as to why there is an outbound to MCAST-NET (seemingly from all PC's on my LAN, although the connection is very short) and moreover, I must confess that I am obviously having difficulties in tweaking the firewall rules. Are there any presets out there that can be loaded that basically prohibit ALL inbound/outbound connections until I explicitly allow them ? Many thanks in advance for any insightful tips.