1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
.\" $OpenBSD: otus.4,v 1.33 2019/11/10 14:10:41 sthen Exp $
.\"
.\" Copyright (c) 2009 Damien Bergamini <damien.bergamini@free.fr>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: November 10 2019 $
.Dt OTUS 4
.Os
.Sh NAME
.Nm otus
.Nd Atheros USB IEEE 802.11a/b/g/n wireless network device
.Sh SYNOPSIS
.Cd "otus* at uhub? port ?"
.Sh DESCRIPTION
The
.Nm
driver supports USB 2.0 wireless network devices based on Atheros
Communications AR9001U chipset.
.Pp
The AR9001U chipset is made of an AR9170 MAC/Baseband
and an AR9101 (1T2R), AR9102 (2T2R) or AR9104 (dual-band 2T2R)
Radio.
.Pp
These are the modes the
.Nm
driver can operate in:
.Bl -tag -width "IBSS-masterXX"
.It BSS mode
Also known as
.Em infrastructure
mode, this is used when associating with an access point, through
which all traffic passes.
This mode is the default.
.It 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.
.El
.Pp
The
.Nm
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
.Qq Cm wpaprotos Ar wpa1,wpa2 .
For standard WPA networks which use pre-shared keys (PSK),
keys are configured using the
.Qq Cm wpakey
option.
WPA-Enterprise networks require use of the wpa_supplicant package.
.Qq Cm wpaprotos Ar wpa1,wpa2 .
For standard WPA networks which use pre-shared keys (PSK),
keys are configured using the
.Qq Cm wpakey
option.
WPA-Enterprise networks require use of the wpa_supplicant package.
.Pp
The
.Nm
driver can be configured at runtime with
.Xr ifconfig 8
or on boot with
.Xr hostname.if 5 .
.Sh FILES
The driver needs at least version 1.0 of the following firmware files,
which are loaded when an interface is attached:
.Pp
.Bl -tag -width Ds -offset indent -compact
.It Pa /etc/firmware/otus-init
.It Pa /etc/firmware/otus-main
.El
.Pp
Although these firmware files are freely redistributable, their usage
is restricted.
A prepackaged version of the firmware can be installed using
.Xr fw_update 1 .
.Sh HARDWARE
The following adapters should work:
.Pp
.Bl -tag -width Ds -offset indent -compact
.It 3Com 3CRUSBN275
.It Arcadyan WN7512
.\" .It AVM FRITZ!WLAN USB Stick N
.It CACE AirPcap \&Nx
.It D-Link DWA-130 rev \&D1
.It D-Link DWA-160 rev A1
.It D-Link DWA-160 rev A2
.It IO-Data WN-GDN/US2
.It NEC Aterm WL300NU-G
.It Netgear WNDA3100
.It Netgear WN111 v2
.It Planex GW-US300
.It SMC Networks SMCWUSB-N2
.It TP-Link TL-WN821N v1, v2
.It Ubiquiti SR71 USB
.It Unex DNUA-81
.It Z-Com UB81
.It Z-Com UB82
.It ZyXEL NWD-271N
.El
.Sh EXAMPLES
The following example scans for available networks:
.Pp
.Dl # ifconfig otus0 scan
.Pp
The following
.Xr hostname.if 5
example configures otus0 to join network
.Dq mynwid ,
using WPA key
.Dq mywpakey ,
obtaining an IP address using DHCP:
.Bd -literal -offset indent
nwid mynwid wpakey mywpakey
dhcp
.Ed
.Sh DIAGNOSTICS
.Bl -diag
.It "otus0: error N, could not read firmware ..."
For some reason, the driver was unable to read the microcode file from the
filesystem.
The file might be missing or corrupted.
.It "otus0: device timeout"
A frame dispatched to the hardware for transmission did not complete in time.
The driver will reset the hardware.
This should not happen.
.El
.Sh SEE ALSO
.Xr arp 4 ,
.Xr ifmedia 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr usb 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.6 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Damien Bergamini Aq Mt damien.bergamini@free.fr
based on source code licensed under the ISC released in 2008 by Atheros
Communications for Linux.
.Sh CAVEATS
The AVM FRITZ!WLAN USB Stick N adapter is currently not supported.
.Pp
The
.Nm
driver does not support any of the 802.11n capabilities offered by the
AR9001U chipset.
Additional work is required in
.Xr ieee80211 9
before those features can be supported.
.Pp
This driver does not support powersave mode.
|
