D-Link DIR-505 User Manual page 82

Section 4 - Access Point Mode
Width: channel width. Normally, this should be left on Auto 20/40
MHz. If you are not using any 802.11n wireless clients, you
can set this to 20 MHz.
Visibility This setting controls whether the router's wireless network
Status:
name(SSID) will be broadcast so that wireless devices can
scan for it. If you set it to Invisible, all wireless clients will
need to enter the network name and security settings of
your wireless network manually.
Wireless Here, you can select between None, WEP, WPA-Personal,
Security
and WPA-Enterprise. Refer to the following pages for details
Mode on coniguring the diferent security modes.
D-Link DIR-505 User Manual 77