Windows 7: Block Modem access ???????

My son always keep looking youtube videos though my wireless modem. So is there any way to block modem for other devices. So that only I can access.

Buju123, yes, change the codes in the wireless modem (really a wireless router, most likely)

Log onto the router and go to the wireless section and change the access code.

Rich

Some router offer the ability to add MAC addresses to an "access list".
Access your router using its IP address, the login credentials should be something along the lines of adminassword , unless you have changed it already.
Then go to setting and click "access list"
Add your mac address and save changes. If you want anyone else to use the router, you need to add their mac address to this list.