The Book of Wireless, Second Edition

I can see the Internet, but I can't see other computers on my LAN.

Some firewall programs normally block inbound attempts to view files and directories. This prevents unauthorized access to your computer, but it also blocks other computers on the LAN unless you specifically allow access from those computers (using their IP addresses). The firewall controls should include a function where you can identify trusted computers or allow local access (it's different for each firewall program); consult the firewall program's documentation for specific instructions.

If the firewall isn't blocking access, it's possible that the computer you're trying to reach is not configured properly, the access point doesn't recognize that computer's MAC address, or the ...