Realtek RTL8187L/RTL8187B USB IEEE
802.11b/g wireless network device
urtw* at uhub? port ?
urtw driver supports USB 802.11b/g
wireless adapters based on the Realtek RTL8187L and RTL8187B.
These are the modes the
urtw driver can
- 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.
urtw driver can be configured to use
Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA1 and WPA2).
WPA2 is the current encryption standard for wireless networks. It is
strongly recommended that neither WEP nor WPA1 are used as the sole
mechanism to secure wireless communication, due to serious weaknesses. WPA1
is disabled by default and may be enabled using the option
wpa1,wpa2". For standard WPA networks which use
pre-shared keys (PSK), keys are configured using the
wpakey" option. WPA-Enterprise networks
require use of the wpa_supplicant package. The
driver relies on the software 802.11 stack for both encryption and
decryption of data frames.
urtw driver can be configured at
runtime with ifconfig(8) or on boot with
The following adapters should work:
- Alfa AWUS036H
- ASUS P5B Deluxe
- Belkin F5D7050E
- Digitus DN-7003GT
- Linksys WUSB54GC v2
- Netgear WG111v2
- Netgear WG111v3
- Shuttle XPC Accessory PN20
- Sitecom WL-168 v1
- Sitecom WL-168 v4
- Surecom EP-9001-g rev 2A
- TRENDnet TEW-424UB V3.xR
The following example scans for available networks:
# ifconfig urtw0 scan
The following hostname.if(5) example configures urtw0 to join network “mynwid”, using WPA key “mywpakey”, obtaining an IP address using DHCP:
join mynwid wpakey mywpakey inet autoconf
arp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5), ifconfig(8)
Realtek Semiconductor: https://www.realtek.com/en
urtw device driver first appeared in
urtw driver was written by
This driver does not support powersave mode.