<s>
pfSense	B-Protocol
is	O
a	O
firewall/router	O
computer	O
software	O
distribution	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
The	O
open	B-Application
source	I-Application
pfSense	B-Protocol
Community	O
Edition	O
(	O
CE	O
)	O
and	O
pfSense	B-Protocol
Plus	O
is	O
installed	O
on	O
a	O
physical	O
computer	O
or	O
a	O
virtual	O
machine	O
to	O
make	O
a	O
dedicated	O
firewall/router	O
for	O
a	O
network	O
.	O
</s>
<s>
It	O
can	O
be	O
configured	O
and	O
upgraded	O
through	O
a	O
web-based	O
interface	O
,	O
and	O
requires	O
no	O
knowledge	O
of	O
the	O
underlying	O
FreeBSD	B-Operating_System
system	O
to	O
manage	O
.	O
</s>
<s>
The	O
pfSense	B-Protocol
project	O
began	O
in	O
2004	O
as	O
a	O
fork	O
of	O
the	O
m0n0wall	B-Protocol
project	O
by	O
Chris	O
Buechler	O
and	O
Scott	O
Ullrich	O
.	O
</s>
<s>
The	O
name	O
derives	O
from	O
the	O
fact	O
that	O
the	O
software	O
uses	O
the	O
packet-filtering	B-Protocol
tool	O
,	O
PF	B-Protocol
.	O
</s>
<s>
Notable	O
functions	O
of	O
pfSense	B-Protocol
include	O
traffic	O
shaping	O
,	O
VPNs	O
using	O
IPsec	O
or	O
PPTP	O
,	O
captive	O
portal	O
,	O
stateful	O
firewall	B-Application
,	O
network	O
address	O
translation	O
,	O
802.1q	O
support	O
for	O
VLANs	O
,	O
and	O
dynamic	O
DNS	O
.	O
</s>
<s>
pfSense	B-Protocol
can	O
be	O
installed	O
on	O
hardware	O
with	O
an	O
x86-64	B-Device
processor	O
architecture	O
.	O
</s>
<s>
In	O
February	O
2021	O
,	O
pfSense	B-Protocol
CE	O
2.5.0	O
and	O
pfSense	B-Protocol
Plus	O
21.02	O
added	O
support	O
for	O
a	O
kernel	O
WireGuard	O
implementation	O
.	O
</s>
<s>
The	O
July	O
2021	O
release	O
of	O
pfSense	B-Protocol
CE	O
2.5.2	O
version	O
re-included	O
WireGuard	O
.	O
</s>
