<s>
T/TCP	B-Protocol
(	O
Transactional	O
Transmission	B-Protocol
Control	I-Protocol
Protocol	I-Protocol
)	O
was	O
a	O
variant	O
of	O
the	O
Transmission	B-Protocol
Control	I-Protocol
Protocol	I-Protocol
(	O
TCP	O
)	O
.	O
</s>
<s>
It	O
was	O
developed	O
to	O
fill	O
the	O
gap	O
between	O
TCP	O
and	O
UDP	B-Protocol
,	O
by	O
Bob	O
Braden	O
in	O
1994	O
.	O
</s>
<s>
T/TCP	B-Protocol
suffers	O
from	O
several	O
major	O
security	O
problems	O
as	O
described	O
by	O
Charles	O
Hannum	O
in	O
September	O
1996	O
.	O
</s>
<s>
RFC	O
1379	O
and	O
RFC	O
1644	O
that	O
define	O
T/TCP	B-Protocol
were	O
moved	O
to	O
in	O
May	O
2011	O
by	O
RFC	O
6247	O
for	O
security	O
reasons	O
.	O
</s>
<s>
TCP	B-Protocol
Fast	I-Protocol
Open	I-Protocol
is	O
a	O
more	O
recent	O
alternative	O
.	O
</s>
