<s>
In	O
computing	O
,	O
net	O
is	O
a	O
command	B-Application
in	O
IBM	B-Application
OS/2	I-Application
(	O
including	O
eComStation	B-Device
and	O
ArcaOS	B-Device
)	O
,	O
Microsoft	B-Application
Windows	I-Application
and	O
ReactOS	B-Application
used	O
to	O
manage	O
and	O
configure	O
the	O
operating	O
system	O
from	O
the	O
command-line	B-Application
.	O
</s>
<s>
It	O
is	O
also	O
part	O
of	O
the	O
IBM	B-General_Concept
PC	I-General_Concept
Network	I-General_Concept
Program	I-General_Concept
for	O
DOS	B-Device
.	O
</s>
<s>
The	O
command	B-Application
is	O
primarily	O
used	O
to	O
manage	O
network	B-Architecture
resources	O
.	O
</s>
<s>
It	O
is	O
an	O
external	O
command	B-Application
implemented	O
as	O
net.exe	B-Device
.	O
</s>
<s>
When	O
used	O
in	O
a	O
batch	O
file	O
,	O
the	O
/Y	O
or	O
/N	O
switches	O
can	O
be	O
used	O
to	O
unconditionally	O
answer	O
Yes	O
or	O
No	O
to	O
questions	O
returned	O
by	O
the	O
command	B-Application
.	O
</s>
<s>
The	O
net	O
command	B-Application
has	O
several	O
sub-commands	O
that	O
can	O
differ	O
from	O
one	O
implementation	O
or	O
operating	O
system	O
version	O
to	O
another	O
.	O
</s>
<s>
On	O
Windows	B-Application
CE	O
.NET	O
4.2	O
,	O
Windows	B-Operating_System
CE	I-Operating_System
5.0	I-Operating_System
and	O
Windows	B-Operating_System
Embedded	I-Operating_System
CE	I-Operating_System
6.0	I-Operating_System
,	O
it	O
is	O
available	O
as	O
an	O
external	O
command	B-Application
stored	O
in	O
.	O
</s>
<s>
The	O
net	B-Device
use	I-Device
command	B-Application
has	O
several	O
network-related	O
functions	O
.	O
</s>
<s>
net	B-Device
use	I-Device
can	O
control	O
mounting	O
(	O
"	O
mapping	B-General_Concept
"	O
in	O
Microsoft	O
terminology	O
)	O
drive	O
shares	O
and	O
connecting	O
shared	O
printers	O
in	O
a	O
network	B-Architecture
environment	O
.	O
</s>
<s>
This	O
command	B-Application
makes	O
use	O
of	O
the	O
SMB	B-Operating_System
(	O
server	B-Operating_System
message	I-Operating_System
block	I-Operating_System
)	O
and	O
the	O
NetBIOS	B-Protocol
protocol	O
on	O
port	B-Protocol
139	I-Protocol
or	O
445	O
.	O
</s>
<s>
The	O
basic	O
Windows	B-Application
XP	O
configuration	O
enables	O
this	O
functionality	O
by	O
default	O
.	O
</s>
<s>
net	B-Device
use	I-Device
can	O
display	O
a	O
list	O
of	O
network-connection	O
information	O
on	O
shared	O
resources	O
.	O
</s>
<s>
net	B-Device
use	I-Device
also	O
connects	O
to	O
the	O
IPC$	O
(	O
interprocess	O
communication	O
share	O
)	O
.	O
</s>
<s>
For	O
example	O
,	O
typing	O
at	O
the	O
command	B-Application
prompt	O
:	O
</s>
<s>
attempts	O
to	O
connect	O
to	O
the	O
share	O
IPC$	O
of	O
the	O
network	B-Architecture
192.168.1.101	O
as	O
an	O
anonymous	O
user	O
with	O
blank	O
password	O
.	O
</s>
<s>
This	O
has	O
changed	O
in	O
Windows	B-Application
NT	O
4.0	O
SP6	O
already	O
.	O
</s>
<s>
In	O
Windows	B-Application
2000	O
"	O
null	O
session	O
connections	O
"	O
could	O
have	O
been	O
enabled	O
after	O
changes	O
of	O
the	O
system-configuration	O
.	O
</s>
