49
Enable
Port
Filtering:
Click
to
enable
the
port
filtering
security
function.
Port
Range/Protocol/Comments:
To
restrict
data
transmission
from
the
local
network
on
certain
ports,
fill
in
the
range
of
start
port
and
end
port,
and
the
protocol,
also
put
your
comments
on
it.
The
Protocol
can
be
TCP,
UDP
or
Both.
Comments
let
you
know
about
whys
to
restrict
data
from
the
ports.
3.6.2
IP
Filtering
Entries
in
this
table
are
used
to
restrict
certain
types
of
data
packets
from
your
local
network
to
Internet
through
the
Gateway.
Use
of
such
filters
can
be
helpful
in
securing
or
restricting
your
local
network.