The
upgt driver supports the USB 2.0 Conexant/Intersil PrismGT series wireless adapters based on the GW3887 chipset.
These are the modes the
upgt driver can operate in:
BSS mode
Also known as infrastructure mode, this is used when associating with an access point, through which all traffic passes. This mode is the default.
monitor mode
In this mode the driver is able to receive packets without associating with an access point. This disables the internal receive filter and enables the card to capture packets from networks which it wouldn't normally have access to, or to scan for access points.
The
upgt driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA-PSK and WPA2-PSK). WPA is the de facto encryption standard for wireless networks. It is strongly recommended that WEP not be used as the sole mechanism to secure wireless communication, due to serious weaknesses in it. The
upgt driver relies on the software 802.11 stack for both encryption and decryption of data frames.
The
upgt driver can be configured at runtime with
ifconfig(8) or on boot with
ifconfig.if(5).