Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
265
Encryption
Cipher
Blowfish
Hash
Algorithm
SHA
‐
1
Scenario
Operation
Procedure
In
above
diagram,
Network
‐
A
is
in
the
headquarters,
and
the
subnet
of
its
Intranet
is
10.0.76.0/24.
The
security
gateway
for
Network
‐
A
has
the
IP
address
of
10.0.76.2
for
LAN
interface
and
203.95.80.22
for
WAN
interface.
It
serves
as
an
OpenVPN
server.
Network
‐
B
is
in
the
mobile
office
and
the
subnet
of
its
Intranet
is
10.0.75.0/24.
The
security
gateway
for
Network
‐
B
has
the
IP
address
of
192.168.1.253
for
LAN
interface
and
118.18.81.33
for
WAN
interface.
It
serves
as
an
OpenVPN
client.
Establish
an
OpenVPN
VPN
tunnel
by
starting
from
the
OpenVPN
client
site.
So
hosts
in
Network
‐
B
can
access
hosts
or
servers
in
Network
‐
A.
But
can’t
access
from
Network
‐
A
to
Network
‐
B.
To
communicate
each
other
securely
between
Intranets
of
10.0.75.0/24
and
192.168.1.0/24,
please
add
route
policy
according
to
the
environment
by
checking
the
"Enable"
box
of
Advanced
Configuration.
OpenVPN
VPN
Client
Scenario
When
you
want
the
security
gateway
to
play
an
OpenVPN
client
role,
check
the
"Enable"
box
and
choose
"Client"
option
in
the
"OpenVPN
Configuration"
window.
And
make
its
related
configuration
in
following
sections.
OpenVPN
Client
Configuration
"OpenVPN
Client
Configuration"
window
can
let
you
enable
the
OpenVPN
client
function
by
checking
the
"Enable"
box.
OpenVPN
Client
List
"OpenVPN
Client
List"
window
shows
your
defined
OpenVPN
clients
and
their
tunnel
status.
Only
some
important
information
for
all
tunnels
are
shown
in
the
list
in
following
diagram.
