Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
157
known
Service
is
selected,
otherwise
select
User
‐
defined
Service
and
specify
a
port
range.
For
Protocol
,
select
GRE
to
filter
GRE
packets
For
Protocol
,
select
ESP
to
filter
ESP
packets
For
Protocol
,
select
SCTP
to
filter
SCTP
packets
For
Protocol
,
select
User
‐
defined
to
filter
packets
with
specified
port
number.
Then
enter
a
pot
number
in
Protocol
Number
box.
Time
Schedule
A
Must
filled
setting
Apply
Time
Schedule
to
this
rule,
otherwise
leave
it
as
Always.
If
the
dropdown
list
is
empty
ensure
Time
Schedule
is
pre
‐
configured.
Refer
to
System
>
Scheduling
>
Scheduling
Setting
tab
Enabling
the
rule
The
box
is
unchecked
by
default.
Click
Enable
box
to
activate
this
rule
then
save
the
settings.
Save
N/A
Click
Save
to
save
the
settings
Undo
N/A
Click
Undo
to
cancel
the
settings
Back
N/A
When
the
Back
button
is
clicked
the
screen
will
return
to
the
Packet
Filters
Configuration
page.
