How Can I Prevent Other Computers to Access My Computer On my LAN? Even unable to ping my PC.?

I have seen such computers on my Network.

I Have Win XP

Actually I Have A cable Internet

How Can I Prevent Other Computers to Access My Computer On my LAN? Even unable to ping my PC.?norten

u could go to system property on my computer right click.then go to remote n disable remote assittance.or u could purchase firewall.good luck.

How Can I Prevent Other Computers to Access My Computer On my LAN? Even unable to ping my PC.?panda

The best way to do this is to use a router. The router will move your computer onto a private network. People trying to connect back to you hit the router and not your PC. Also a router will allow you to have multiple computers in your house share your internet connection.