1.\"- 2.\" SPDX-License-Identifier: BSD-2-Clause 3.\" 4.\" Copyright (c) 2008 Weongyo Jeong 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd November 10, 2024 29.Dt URTW 4 30.Os 31.Sh NAME 32.Nm urtw 33.Nd Realtek RTL8187B/L USB IEEE 802.11b/g wireless network driver 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device ehci" 39.Cd "device uhci" 40.Cd "device ohci" 41.Cd "device usb" 42.Cd "device urtw" 43.Cd "device wlan" 44.Ed 45.Pp 46Alternatively, to load the driver as a module at boot time, 47place the following line in 48.Xr loader.conf 5 : 49.Bd -literal -offset indent 50if_urtw_load="YES" 51.Ed 52.Sh DESCRIPTION 53The 54.Nm 55driver supports USB 802.11b/g wireless adapters based on the 56Realtek RTL8187B/L. 57.Pp 58.Nm 59supports 60.Cm station 61and 62.Cm monitor 63mode operation. 64Only one virtual interface may be configured at any time. 65.Pp 66For more information on configuring this device, see 67.Xr ifconfig 8 . 68.Sh HARDWARE 69The 70.Nm 71driver supports Realtek RTL8187B/L based wireless network devices, including: 72.Pp 73.Bl -column -offset indent "Shuttle XPC Accessory PN20" "RTL8225" "USB" -compact 74.It Em Card Ta Em Radio Ta Em Bus 75.It Belkin F5D7050E Ta RTL8225 Ta USB 76.It Linksys WUSB54GCv2 Ta RTL8225 Ta USB 77.It Netgear WG111v2 Ta RTL8225 Ta USB 78.It Netgear WG111v3 Ta RTL8225 Ta USB 79.It Safehome WLG-1500SMA5 Ta RTL8225 Ta USB 80.It Shuttle XPC Accessory PN20 Ta RTL8225 Ta USB 81.It Sitecom WL168v1 Ta RTL8225 Ta USB 82.It Sitecom WL168v4 Ta RTL8225 Ta USB 83.It SureCom EP-9001-g(2A) Ta RTL8225 Ta USB 84.It TRENDnet TEW-424UB V3.xR Ta RTL8225 Ta USB 85.El 86.Sh EXAMPLES 87Join an existing BSS network (i.e., connect to an access point): 88.Pp 89.Dl ifconfig wlan create wlandev urtw0 inet 192.0.2.20/24 90.Pp 91Join a specific BSS network with network name 92.Ar my_net : 93.Pp 94.Dl ifconfig wlan create wlandev urtw0 ssid my_net up 95.Pp 96Join a specific BSS network with 64-bit WEP encryption: 97.Bd -literal -offset indent 98ifconfig wlan create wlandev urtw0 ssid my_net \e 99 wepmode on wepkey 0x1234567890 weptxkey 1 up 100.Ed 101.Sh SEE ALSO 102.Xr intro 4 , 103.Xr netintro 4 , 104.Xr usb 4 , 105.Xr wlan 4 , 106.Xr wlan_ccmp 4 , 107.Xr wlan_tkip 4 , 108.Xr wlan_wep 4 , 109.Xr ifconfig 8 , 110.Xr wpa_supplicant 8 111.Rs 112.%T Realtek 113.%U https://www.realtek.com 114.Re 115.Sh HISTORY 116The 117.Nm 118device driver first appeared in 119.Fx 8.0 . 120.Sh AUTHORS 121.An -nosplit 122The 123.Nm 124driver was written by 125.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org . 126