Filter
Top Products
Billion 800VGT Router
General
Settings
You
can
choose
not
to
enable
the
Firewall
and
still
have
access
to
URL
Filter
and
IM/P2P
Blocking,
or
you
can
enable
the
Firewall
using
preset
filter
rules
and
modify
the
port
filter
rules
as
required.
The
Packet
Filter
is
used
to
filter
packets
based-on
Applications
(Port)
or
IP
addresses.
There
are
four
options
when
you
enable
the
Firewall,
they
are:
All
blocked/User-defined
:
No
pre-defined
port
or
address
filter
rules
by
default,
meaning
that all
inbound
(Internet
to
LAN)
and
outbound
(LAN
to
Internet)
packets
will
be
blocked.
Users
have
to add
their
own
filter
rules
for
further
access
to
the
Internet.
High/Medium/Low
security
level:
The
predefined
port
filter
rules
for
High,
Medium
and
Low
security
are
displayed
in
Port
Filters
of
Packet
Filter.
Select
either
High,
Medium
or
Low
security
level
to
enable
the
Firewall.
The
only
difference
between
these
three
security
levels
is
the
preset
port
filter
rules
in
the
Packet
Filter.
Firewall
functionality
is
the
same
for
all
levels;
it
is
only
the
list
of
preset
port
filters
that
changes
between
each
setting.
For
more
detailed
on
level
of
preset
port
filter
information,
refer
to
Table
1:
Predefined
Port
Filter
.
If
you
choose
one
of
the
preset
security
levels
and
add
custom
filters,
this
level
of
filter
rules
will
be
saved
and
you
do
not
need
to
re-configure
the
rules
again
if
you
disable
or
switch
to
other
firewall
level.
The
“
Block
WAN
Request
”
is
a
stand-alone
function
and
not
related
to
whether
security
is
enabled
or
disabled.
Mostly
this
is
used
to
preventing
a
hacker
on
the
WAN
from
using
any
scan
tools..
Attempting
to
perform
this
action
remotely
may
result
in
blocking
of
all
access
to
configuration
and
management
of
the
device
from
the
Internet.
Use
this
with
caution
when
connecting
over
the
WAN
57
Chapter
4:
Configuration