Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
154
Packet
Filter
Setting
The
packet
filter
setting
allows
user
to
create
and
customize
packet
filter
policies
to
allow
or
reject
specific
inbound/outbound
packets
through
the
router
based
on
their
office
setting.
Enabling
Packet
Filter
Go
to
Advanced
Network
>
Firewall
>
Packet
Filters
Tab
Enabling
Packet
Filters
Item Name
Value setting
Description
Enable
Packet
Filter
function
The
box
is
unchecked
by
default
Check
the
Enable
box
to
activate
Packet
Filter
function
Black
List
/
White
List
(Filter
Method
Selection)
Deny
those
match
the
following
rules
is
set
by
default
When
Deny
those
match
the
following
rules
is
selected,
as
the
name
suggest,
packets
specified
in
the
rules
will
be
blocked
–black
listed.
In
contrast,
with
Allow
those
match
the
following
rules
,
you
can
specifically
white
list
the
packets
to
pass
and
the
rest
will
be
blocked.
Log
Alert
The
box
is
unchecked
by
default
Check
the
Enable
box
to
activate
Event
Log.
Save
N/A
Click
Save
to
save
the
settings
Undo
N/A
Click
Undo
to
cancel
the
settings
Note:
Packet
Filter
function
is
only
available
when
Firewall
feature
is
enabled.
Refer
to
section
4.1
Firewall
