Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
180
Scenario
Operation
Procedure
In
above
diagram,
the
gateway
detects
incoming
packets
which
TCP
ports
are
25,
80,110,443
and
8080
then
forward
to
transfer
the
E
‐
service
requests
to
the
LAN
servers
and
send
the
replies
from
LAN
servers
back
to
the
requester.
System
will
block
lots
of
packets
in
seconds.
IPS
Setting
The
Intrusion
Prevention
System
(IPS)
setting
allows
user
to
customize
intrusion
prevention
rules
to
prevent
malicious
packets.
Enabling
IPS
Firewall
Go
to
Advanced
Network
>
Firewall
>
IPS
Tab
Enabling
IPS
Firewall
Item
Value setting
Description
Enable
IPS
function
The
box
is
unchecked
by
default
Check
the
Enable
box
to
activate
IPS
function
Log
Alert
The
box
is
unchecked
by
default
Check
the
Enable
box
to
activate
to
activate
Event
Log.
Save
N/A
Click
Save
to
save
the
settings
Undo
N/A
Click
Undo
to
cancel
the
settings
