IF you have more than one system AND you are behind a router with NAT then ipconfig /all will show your ip-address in the 192.168.*.*, 10.*.*.*, or 172.16.*.* range [r]. Under these conditions, there are two firewall rules to speed-up the firewall processing and assist in allowing your LAN systems easy access to one another. 1) allow tcp/udp in/out from/to 127.0.0.1 these references are already confined to the local system and no need to be concerned2) allow tcp/udp in/out from/to [r] (from the above) all these are on your local LAN and under your control already move both of these to the TOP of the rule list.