<s>
libipq	B-Application
is	O
a	O
development	O
library	O
for	O
iptables	B-Application
userspace	O
packet	O
queuing	O
.	O
</s>
<s>
Libipq	B-Application
provides	O
an	O
API	B-General_Concept
for	O
communicating	O
with	O
ip_queue	O
.	O
</s>
<s>
Libipq	B-Application
has	O
been	O
deprecated	O
in	O
favour	O
of	O
the	O
newer	O
in	O
Linux	O
kernel-2.6.14	O
onwards	O
.	O
</s>
<s>
libipq	B-Application
has	O
been	O
used	O
by	O
some	O
widely	O
deployed	O
applications	O
as	O
their	O
interface	O
to	O
the	O
Linux	O
kernel-space	O
iptables	B-Application
packet	O
filter	O
.	O
</s>
<s>
Snort	B-Language
-	O
Snort	B-Language
is	O
an	O
Intrusion	O
Detection	O
System	O
which	O
runs	O
in	O
user-space	O
and	O
uses	O
libipq	B-Application
to	O
interface	O
with	O
Linux	O
's	O
iptables	B-Application
packet	O
filter	O
.	O
</s>
