Thread: Not being able to connect Network

Not all network problems are as simple as just not being able to connect. Often they can seem quite arbitrary like being able to do everything except send and receive files in an instant-messenger program, or not being able to playa particular game. This kind ofprqblem is usually caused by a firewall. Both XP and Vista include a firewall that's designed to keep your computer secure, but they can both sometimes block programs that you want to use.



If a single program doesn't work, check the firewall settings via the Control Panel in XP or the Network and Sharing Center in Vista. Don't tick the box to block all incoming connections, as this will stop things like instant messaging. Use the Exceptions tab to choose which programs are allowed through the firewall; click Add Program to give permission to a trusted program to have unfettered access to the internet.

Most routers also include a sort of firewall, so you may need to alter settings in that to allow some programs to work. The most common problems are caused by instant-messenger tools, file-sharing programs and games, all of which often need to communicate via a special 'port'. In this case you program - this is called port forwarding. The exact method to use varies according to the router you own and the software you use, so check for more instructions.