<s>
Rope	O
is	O
a	O
programming	O
language	O
that	O
allows	O
developers	O
to	O
write	O
extensions	O
to	O
the	O
Iptables/Netfilter	O
components	O
of	O
Linux	B-Application
using	O
a	O
simple	O
scripting	O
language	O
based	O
on	O
Reverse	O
Polish	O
notation	O
.	O
</s>
<s>
It	O
is	O
a	O
scriptable	O
Iptables	B-Application
match	O
module	O
,	O
used	O
to	O
identify	O
whether	O
IP	O
packets	O
passed	O
to	O
it	O
match	O
a	O
particular	O
set	O
of	O
criteria	O
or	O
not	O
.	O
</s>
<s>
Rope	O
started	O
life	O
as	O
a	O
project	O
to	O
make	O
the	O
"	O
string	O
"	O
match	O
module	O
of	O
Iptables	B-Application
stronger	O
and	O
evolved	O
fairly	O
quickly	O
into	O
an	O
open-ended	O
scriptable	O
packet	O
matching	O
mechanism	O
.	O
</s>
