I am just setting up a simple at home wireless network using DD-WRT. It works great with security disabled, but as soon as I add any type of security, then I can't see it to connect to it anymore. I've tried rebooting the router (via the button under Admin) and by disconnecting the power. Neither worked. Any tips?
Ensure that your driver/wireless client software supports the encryption type you selected.
For example many clients/drivers do not support the WPA enterprises as well as RADIUS.
Check your software and click the list of encryption types (usually found right above the key entry input field) and see if you have the on you have selected in you DD-WRT settings. (Usually if it is listed it is supported)