my condition is to block all web sites except 1. how to do this through host file? suriya

another way to do this is to set IE to look for a fictitous proxy for all websites except the ones you specify - this is done via tools > internet options > connections > lan settings > tick "use a proxy" > advanced - then type in a fictitious proxy address and then specify the sites in the bottom box

SWEET tip my brother. Jimi_l

You can't really unless it is for a real young kid. Host file just bypasses the name resolution not the ip address. rayok123's idea is about as good as any if you lock down the system to disallow access to changes. Use 127.0.0.1 usually for dummy ip address. I guess you could disable dhcp and use host file. One could still use an IP address to bypass hosts file. You'd be better off using a router, most people have one anyway. It can be bypassed too if you have access to the system. You could use a proxy.pac file to test mac and os version at a proxy server and also allow ip address's.

suriya , see if the info found @: http://mvps.org/winhelp2002/hosts.htm helps. HTH. Ed in Texas.