Join Date: Apr 2007
Location: Minneapolis, MN
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Are you talking about a password to connect to the router wirelessly or a password to log on to the network in general?
I haven't set up a password to get onto a network in a million years so it escapes me, but here are the basic things to do to protect the wireless router (there are more ways, too, but this generally does the trick for home networks):
Enable WPA encrytion (or WPA2, etc, depending on what your hardware supports). To do this, find the wireless security features on your router's page and plug in a passphrase (you can get random passphrases from the 'net).
Disable the SSID broadcast.
Enable MAC address filtering.
There are more ways, too, but that will get you started and it is 300% more than what most people do.