M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
172
administrator
wants
to
deny
only
specific
packets
from
going
through,
he
can
use
the
"Packet
Filters"
function
by
defining
the
black
list
to
carry
out
to
meet
the
requirement.
It
is
contrasting
to
above
diagram.
Scenario
Description
To
only
allow
dedicated
packets
that
match
to
one
packet
filtering
rule
to
flow
through
the
gateway
and
block
other
packets
that
are
not
defined
in
the
“Packet
Filter
Rule
List”
entry.
Parameter
Setup
Example
Following
tables
list
the
parameter
configuration
as
an
example
for
the
gateway
in
above
diagram
with
"Packet
Filters"
enabling.
Use
default
value
for
those
parameters
that
are
not
mentioned
in
the
tables.
Configuration
Path
[Packet
Filters]
‐
[Configuration]
Packet
Filters
■
Enable
Black
List
/
White
List
Deny
all
to
pass
except
those
match
the
following
rules.
Configuration
Path
[Packet
Filters]
‐
[Packet
Filter
Rule
List]
ID
1
2
Rule
Name
Access
80
Access
443
Source
IP
IP
Range:
10.0.75.200
~
10.0.75.250
IP
Range:
10.0.75.200
~
10.0.75.250
Destination
IP
Specific
IP
Address:
0.0.0.0
Specific
IP
Address:
0.0.0.0
Destination
Port
User
‐
defined
Service:
80
~
80
User
‐
defined
Service:
443
~
443
Protocol
TCP
TCP
Rule
■
Enable
■
Enable
Scenario
Operation
Procedure
In
above
diagram,
the
Gateway
is
the
gateway
of
Network
‐
A
and
the
subnet
of
its
Intranet
is
10.0.75.0/24.
The
gateway
has
the
IP
address
of
10.0.75.2
for
LAN
interface,
118.18.81.33
for
WAN
‐
1
interface.
It
serves
as
a
NAT
router.
Enable
the
packet
filter
function
and
specify
the
"Packet
Filter
Rule
List"
is
a
white
list
and
configure
two
packet
filtering
rules
for
the
gateway.
Create
one
rule
to
allow
HTTP
packets
and
the
other
rule
to
allow
HTTPS
packets
to
pass
through
the
gateway.
System
will
allow
only
HTTP
and
HTTPS
packet
to
pass
through
the
gateway
for
those
hosts
in
the
Intranet
and
their
IP
addresses
are
in
the
range
from
.200
to
.250.
