<s>
WebNFS	B-Protocol
is	O
an	O
extension	O
to	O
the	O
Network	B-Protocol
File	I-Protocol
System	I-Protocol
(	O
NFS	O
)	O
for	O
allowing	O
clients	O
to	O
access	O
a	O
file	B-Application
system	I-Application
over	O
the	O
internet	O
using	O
a	O
simplified	O
,	O
firewall-friendly	O
protocol	O
.	O
</s>
<s>
WebNFS	B-Protocol
was	O
developed	O
to	O
give	O
Java	B-Application
applets	I-Application
and	O
other	O
internet	O
enabled	O
applications	O
a	O
way	O
of	O
accessing	O
filesystem	B-Application
services	O
over	O
the	O
internet	O
.	O
</s>
<s>
While	O
NFS	O
provides	O
applications	O
on	O
Unix	B-Application
with	O
full	O
filesystem	B-Application
semantics	O
,	O
not	O
all	O
of	O
these	O
might	O
be	O
needed	O
in	O
a	O
distributed	O
,	O
read-only	O
web	O
environment	O
.	O
</s>
<s>
WebNFS	B-Protocol
makes	O
use	O
of	O
a	O
well	O
known	O
port	O
(	O
port	O
2049	O
on	O
both	O
UDP	B-Protocol
and	O
TCP	B-Protocol
)	O
thus	O
avoiding	O
the	O
overhead	O
and	O
unpredictability	O
of	O
using	O
the	O
ONC	B-Protocol
RPC	I-Protocol
portmap	B-Protocol
protocol	O
.	O
</s>
<s>
WebNFS	B-Protocol
adds	O
public	O
filehandles	O
and	O
multicomponent	O
lookups	O
to	O
the	O
NFS	B-Protocol
protocol	I-Protocol
.	O
</s>
<s>
WebNFS	B-Protocol
is	O
specified	O
by	O
a	O
number	O
of	O
RFCs	O
:	O
</s>
<s>
In	O
2007	O
,	O
Sun	O
Microsystems	O
opensourced	O
its	O
WebNFS	B-Protocol
implementation	O
.	O
</s>
<s>
While	O
WebNFS	B-Protocol
itself	O
did	O
not	O
gain	O
much	O
traction	O
,	O
several	O
important	O
WebNFS	B-Protocol
features	O
later	O
became	O
part	O
of	O
NFSv4	O
–	O
such	O
as	O
the	O
usage	O
of	O
port	O
2049	O
,	O
or	O
the	O
concept	O
of	O
a	O
fixed	O
"	O
root	O
filehandle	O
"	O
(	O
which	O
evolved	O
from	O
WebNFS	B-Protocol
public	O
filehandles	O
and	O
allows	O
exported	O
filesystems	B-Application
to	O
be	O
accessed	O
without	O
needing	O
the	O
MOUNT	O
protocol	O
to	O
learn	O
their	O
individual	O
root	O
handles	O
first	O
)	O
,	O
both	O
together	O
allowing	O
NFSv4	O
to	O
function	O
without	O
the	O
portmap	B-Protocol
service	O
.	O
</s>
