<s>
A	O
wireless	B-Device
gateway	I-Device
routes	O
packets	O
from	O
a	O
wireless	B-Architecture
LAN	I-Architecture
to	O
another	O
network	O
,	O
wired	O
or	O
wireless	O
WAN	O
.	O
</s>
<s>
Wireless	B-Device
gateways	I-Device
combine	O
the	O
functions	O
of	O
a	O
wireless	B-Device
access	I-Device
point	I-Device
,	O
a	O
router	B-Protocol
,	O
and	O
often	O
provide	O
firewall	B-Application
functions	O
as	O
well	O
.	O
</s>
<s>
They	O
provide	O
network	B-Protocol
address	I-Protocol
translation	I-Protocol
(	O
NAT	O
)	O
functionality	O
,	O
so	O
multiple	O
users	O
can	O
use	O
the	O
internet	O
with	O
a	O
single	O
public	O
IP	B-Protocol
.	O
</s>
<s>
It	O
also	O
acts	O
like	O
a	O
dynamic	B-Protocol
host	I-Protocol
configuration	I-Protocol
protocol	I-Protocol
(	O
DHCP	B-Protocol
)	O
to	O
assign	O
IPs	O
automatically	O
to	O
devices	O
connected	O
to	O
the	O
network	O
.	O
</s>
<s>
There	O
are	O
two	O
kinds	O
of	O
wireless	B-Device
gateways	I-Device
.	O
</s>
<s>
The	O
simpler	O
kind	O
must	O
be	O
connected	O
to	O
a	O
DSL	B-Device
modem	I-Device
or	O
cable	B-Device
modem	I-Device
to	O
connect	O
to	O
the	O
internet	O
via	O
the	O
internet	O
service	O
provider	O
(	O
ISP	O
)	O
.	O
</s>
<s>
It	O
has	O
a	O
wired	O
connection	O
to	O
the	O
ISP	O
,	O
at	O
least	O
one	O
jack	O
port	O
for	O
the	O
LAN	B-General_Concept
(	O
usually	O
four	O
jacks	O
)	O
,	O
and	O
an	O
antenna	O
for	O
wireless	O
users	O
.	O
</s>
<s>
The	O
wireless	B-Device
gateway	I-Device
could	O
support	O
wireless	O
802.11b	O
and	O
802.11g	O
with	O
speed	O
up	O
to	O
56Mbit/s	O
,	O
802.11n	O
with	O
speed	O
up	O
to	O
300Mps	O
and	O
recently	O
the	O
802.11ac	O
with	O
speed	O
up	O
to	O
1200Mbit/s	O
.	O
</s>
<s>
The	O
LAN	B-General_Concept
interface	O
may	O
support	O
100Mbit/s	O
(	O
Fast	B-Protocol
)	O
or	O
1000Mbit/s	O
(	O
Gigabit	O
)	O
Ethernet	O
.	O
</s>
<s>
All	O
wireless	B-Device
gateways	I-Device
have	O
the	O
ability	O
to	O
protect	O
the	O
wireless	O
network	O
using	O
security	O
encryption	O
methods	O
such	O
as	O
WEP	B-Protocol
,	O
WPA	O
,	O
and	O
WPS	B-Protocol
.	O
</s>
<s>
WPA2	O
with	O
WPS	B-Protocol
disabled	O
is	O
the	O
most	O
secure	O
method	O
.	O
</s>
<s>
There	O
are	O
many	O
wireless	B-Device
gateway	I-Device
brands	O
with	O
models	O
offering	O
different	O
features	O
and	O
quality	O
.	O
</s>
<s>
They	O
can	O
differ	O
on	O
the	O
wireless	O
range	O
and	O
speed	O
,	O
a	O
number	O
of	O
LAN	B-General_Concept
ports	O
,	O
speed	O
,	O
and	O
extra	O
functionality	O
.	O
</s>
<s>
However	O
,	O
most	O
internet	O
providers	O
offer	O
a	O
free	O
wireless	B-Device
gateway	I-Device
with	O
their	O
services	O
,	O
thus	O
limiting	O
the	O
user	O
's	O
choice	O
.	O
</s>
