<s>
UnrealIRCd	B-Application
is	O
an	O
open-source	B-Application
IRC	B-Protocol
daemon	B-Operating_System
,	O
originally	O
based	O
on	O
DreamForge	O
,	O
and	O
is	O
available	O
for	O
Unix-like	O
operating	O
systems	O
and	O
Windows	B-Application
.	O
</s>
<s>
Since	O
the	O
beginning	O
of	O
development	O
on	O
UnrealIRCd	B-Application
c	B-Language
.	O
May	O
1999	O
,	O
many	O
new	O
features	O
have	O
been	O
added	O
and	O
modified	O
,	O
including	O
advanced	O
security	O
features	O
and	O
bug	O
fixes	O
,	O
and	O
it	O
has	O
become	O
a	O
popular	O
server	O
.	O
</s>
<s>
UnrealIRCd	B-Application
was	O
originally	O
based	O
on	O
DALnet	O
's	O
DreamForge	O
IRCd	O
,	O
"	O
a	O
now	O
deprecated	O
IRC	B-Protocol
server	O
that	O
was	O
the	O
predecessor	O
to	O
the	O
actively	O
maintained	O
Bahamut	O
server.	O
"	O
</s>
<s>
On	O
July	O
13	O
,	O
2007	O
,	O
Carsten	O
V	O
.	O
Munk	O
(	O
stskeeps	O
)	O
,	O
the	O
founder	O
of	O
the	O
UnrealIRCd	B-Application
project	O
,	O
announced	O
that	O
a	O
future	O
v4.0	O
would	O
be	O
a	O
fork	O
of	O
InspIRCd	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
version	O
3.2.10	O
in	O
December	O
2012	O
,	O
Bram	O
Matthys	O
(	O
Syzop	O
)	O
,	O
the	O
current	O
project	O
leader	O
of	O
UnrealIRCd	B-Application
,	O
announced	O
that	O
development	O
has	O
been	O
started	O
on	O
a	O
3.4	O
version	O
.	O
</s>
<s>
In	O
October	O
2015	O
it	O
was	O
announced	O
that	O
due	O
to	O
the	O
many	O
changes	O
the	O
new	O
series	O
will	O
be	O
called	O
UnrealIRCd	B-Application
4	O
and	O
the	O
first	O
Release	O
Candidate	O
was	O
made	O
available	O
for	O
download	O
.	O
</s>
<s>
An	O
UnrealIRCd	B-Application
4.0.0	O
stable	O
release	O
was	O
made	O
on	O
December	O
24	O
,	O
2015	O
.	O
</s>
<s>
Next	O
UnrealIRCd	B-Application
5	O
stable	O
series	O
was	O
first	O
released	O
on	O
December	O
13	O
,	O
2019	O
.	O
</s>
<s>
Some	O
of	O
Unreal	O
's	O
features	O
are	O
referred	O
to	O
as	O
"	O
nonstandard	O
"	O
,	O
in	O
that	O
they	O
are	O
not	O
listed	O
in	O
the	O
IRC-related	O
RFCs	O
1459	O
and	O
2811	O
–	O
2813	O
,	O
but	O
are	O
beneficial	O
"	O
from	O
a	O
security	O
point	O
of	O
view.	O
"	O
</s>
<s>
The	O
software	O
"	O
possibly	O
has	O
the	O
most	O
security	O
features	O
of	O
any	O
IRC	B-Protocol
server	O
"	O
,	O
including	O
"	O
spam	O
filters	O
,	O
different	O
styles	O
of	O
user	O
bans	O
,	O
various	O
channel	O
modes	O
to	O
prevent	O
abuse	O
and	O
flooding	O
,	O
SSL	O
(	O
Secure	B-Protocol
Sockets	I-Protocol
Layer	I-Protocol
)	O
connection	O
support	O
,	O
and	O
compressed	O
server	O
connections.	O
"	O
</s>
<s>
For	O
example	O
,	O
the	O
shun	O
command	O
blocks	O
a	O
user	O
from	O
transmitting	O
any	O
text	O
,	O
the	O
spamfilter	O
uses	O
regular	B-Language
expressions	I-Language
and	O
can	O
automatically	O
ban	O
,	O
shun	O
or	O
disconnect	O
users	O
,	O
and	O
dccdeny	O
can	O
block	O
files	O
from	O
being	O
transmitted	O
.	O
</s>
<s>
The	O
Windows	B-Application
version	O
includes	O
error	O
reporting	O
on	O
startup	O
.	O
</s>
<s>
Unreal	O
supports	O
linking	O
to	O
IRC	B-Protocol
Services	O
,	O
and	O
allowing	O
Services	O
to	O
change	O
channel	O
modes	O
.	O
</s>
<s>
UnrealIRCd	B-Application
is	O
"	O
one	O
of	O
the	O
most	O
popular	O
and	O
full-featured	O
IRC	B-Protocol
daemons	B-Operating_System
"	O
and	O
is	O
used	O
on	O
the	O
largest	O
number	O
of	O
IRC	B-Protocol
servers	O
,	O
according	O
to	O
SearchIRC.com	O
.	O
</s>
<s>
This	O
server	O
is	O
described	O
as	O
having	O
"	O
possibly	O
the	O
most	O
security	O
features	O
of	O
any	O
IRC	B-Protocol
server.	O
"	O
</s>
<s>
The	O
tarball	B-Application
of	O
version	O
3.2.8.1	O
,	O
from	O
November	O
2009	O
to	O
June	O
12	O
,	O
2010	O
,	O
contained	O
a	O
trojan	O
that	O
allowed	O
people	O
to	O
execute	O
commands	O
with	O
the	O
privileges	O
of	O
the	O
user	O
running	O
the	O
daemon	B-Operating_System
,	O
regardless	O
of	O
any	O
user	O
restrictions	O
.	O
</s>
<s>
The	O
problem	O
was	O
fixed	O
-	O
the	O
current	O
tarball	B-Application
download	O
is	O
not	O
suspected	O
to	O
contain	O
a	O
trojan	O
.	O
</s>
<s>
The	O
"	O
Firefox	O
XPS	B-Application
"	O
cross-protocol	O
JavaScript-based	O
attack	O
on	O
IRC	B-Protocol
networks	I-Protocol
was	O
reported	O
in	O
January	O
2010	O
;	O
UnrealIRCd	B-Application
developers	O
later	O
released	O
a	O
patch	O
to	O
set	O
its	O
anti-spoofing	O
configuration	O
parameter	O
to	O
"	O
on	O
"	O
-	O
the	O
default	O
was	O
previously	O
"	O
off	O
"	O
-	O
and	O
"	O
kill/zline/etc	O
such	O
connections	O
"	O
.	O
</s>
