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Billion 800VGT Router
Add
Virtual
Server
Because
NAT
can
act
as
a
“natural”
Internet
firewall,
your
router
protects
your
network
from
being
accessed
by
outside
users
when
NAT
is
enabled
-
all
incoming
connection
attempts
will
point
to
your
router
unless
you
specifically
created
Virtual
Server
entries
to
forward
those
ports
to
a
computer
on
your
network.
When
your
router
needs
to
allow
outside
users
to
access
internal
servers,
e.g.
a
web
server,
FTP
server,
Email
server
or
game
server,
the
router
can
act
as
a
“virtual
server”.
You
can
set
up
a
local
server
with
a
specific
port
number
for
the
service
to
use,
e.g.
web/HTTP
(port
80),
FTP
(port
21),
Telnet
(port
23),
SMTP
(port
25),
or
POP3
(port
110),
When
an
incoming
access
request
for
a
specified
port
is
received
by
the
router,
it
will
be
forwarded
to
the
corresponding
internal
server.
Time
Schedule:
The
user-defined
time
period
to
enable
your
virtual
server.
You
may
specify
a
time
schedule
or
Always
on
for
the
use
of
this
Virtual
Server
Entry.
For
setup
and
detail,
refer
to
Time
Schedule
section
Application
:
A
user-defined
description
used
to
identify
this
entry.
You
can
click
to
select
existing
predefined
rules.
:
20
predefined
rules
are
available.
Click
the
Radio
button
to
select
the
rule;
Application,
Protocol
and
External/Redirect
Ports
will
be
automatically
filled
in
after
the
selection.
Protocol
:
This
is
the
protocol
supported
by
the
virtual
server.
In
addition
to
specifying
the
port
number
to
be
used,
you
will
also
need
to
specify
the
protocol
used.
The
protocol
used
is
determined
by
the
particular
application.
Most
applications
will
use
TCP
or
UDP.
External
Port:
The
Port
number
on
the
Remote/WAN
side
used
when
accessing
the
virtual
server.
Redirect
Port:
The
Port
number
used
by
the
Local
server
in
the
LAN
network.
Internal
IP
Address:
The
private
IP
in
the
LAN
network,
which
will
be
providing
the
virtual
server
application.
List
all
existing
computers
currently
connected
to
the
network.
You
may
assign
a
computer
with
an
IP
address
or
a
MAC
address
from
this
list.
122
Chapter
4:
Configuration