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Billion 800VGT Router
Firewall
and
Access
Control
Your
router
includes
a
full
SPI
(Stateful
Packet
Inspection)
firewall
for
controlling
Internet
access
from
your
LAN,
as
well
as
helping
to
prevent
attacks
from
hackers.
In
addition
to
this,
when
using
NAT,
the
router
acts
as
a
“natural”
Internet
firewall,
as
all
PCs
on
your
LAN
will
use
private
IP
addresses
that
cannot
be
directly
accessed
from
the
Internet.
Firewall
:
Prevents
access
from
outside
your
network.
The
router
provides
three
levels
of
security
support:
NAT
natural
firewall
:
This
masks
LAN
users’
IP
addresses
making
them
invisible
to
outside
users
on
the
Internet,
thus
making
it
much
more
difficult
for
a
hacker
to
target
any
machine
on
your
network.
This
natural
firewall
is
on
when
NAT
function
is
enabled.
When
using
the
Virtual
Servers
function,
your
PCs
will
be
exposed
to
the
degree
specified
in
your
Virtual
Server
settings,
provided
that
the
ports
specified
are
opened
in
your
firewall
packet
filter
settings.
Firewall
Security
and
Policy
(General
Settings)
:
Inbound
direction
of
Packet
Filter
rules
to
prevent
unauthorized
WAN
computers
or
applications
accessing
your
local
network
from
the
Internet.
Intrusion
Detection
:
Enable
Intrusion
Detection
to
detect,
prevent
and
log
malicious
attacks.
Access
Control
:
Prevents
access
from
computers
on
your
local
network:
Firewall
Security
and
Policy
(General
Settings)
:
Outbound
direction
of
Packet
Filter
rules
to
prevent
unauthorized
LAN
computers
or
applications
accessing
the
Internet.
URL
Filter
:
Blocks
computers
on
your
local
network
from
unwanted
websites.
Here
are
the
items
within
the
Firewall
section:
General
Settings,
Packet
Filter,
Intrusion
Detection,
URL
Filter,
IM/P2P
Blocking
and
Firewall
Log.
56
Chapter
4:
Configuration