Many soft found use the name 127.0.0.1 to block some address on the internet. Against spying, adds, phone home and so on... But on many webpage they say you should use 0.0.0.0 instead because; Using 0.0.0.0 instead of 127.0.0.1 is indeed faster because you don't have to wait for a timeout. It also does not interfere if you are running a web server on the local PC. If you use 0.0.0.0, you may want to add this entry just before your first 0.0.0.0 "blocking" entry: # Special Entries 0.0.0.0 0.0.0.0 # fix for trace-route and net-stat display anomaly Without that entry, some network status and diagnostic apps will use the host-name associated with your first 0.0.0.0 "blocking" entry as the name of the default IP address. Others say that 127.0.0.1 is the best. I did tested here on my pc and see it also really works with 0.0.0.0. I want to know what the specialists here on MDL think about this! Thanks in advance for your post!!