Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
238
Subnet
the
PPTP
server
then
select
Default
Gateway,
otherwise,
specified
a
subnet
and
its
netmask
–the
remote
subnet,
if
the
default
gateway
is
not
used
to
connect
to
the
PPTP
server.
The
Remote
Subnet
format
must
be
IP
address/netmask
(e.g.
10.0.0.2/24).
Authentication
Protocol
1.
A
Must
fill
setting
2.
Unchecked
by
default
Specify
one
ore
multiple
Authentication
Protocol
for
this
PPTP
tunnel.
Available
authentication
methods
are
PAP/CHAP/MS
‐
CHAP/MS
‐
CHAPv2
MPPE
Encryption
1.
Unchecked
by
default
2.
an
optional
setting
Specify
whether
PPTP
server
supports
MPPE
Protocol
.
Click
the
Enable
box
to
enable
MPPE.
Note:
when
MPPE
Encryption
is
enabled,
the
Authentication
Protocol
PAP/CHAP
options
will
not
be
available.
NAT
before
Tunneling
1.
Unchecked
by
default
2.
an
optional
setting
Check
the
Enable
box
to
enable
NAT
function
for
this
PPTP
tunnel.
LCP
Echo
Type
Auto
is
set
by
default
Specify
the
LCP
Echo
Type
for
this
PPTP
tunnel.
Auto,
User
‐
defined,
Disable.
Auto
the
system
sets
the
Interval
and
Max.
Failure
Time.
User
‐
defined
enter
the
Interval
and
Max.
Failure
Time.
Disable
disable
the
LCP
Echo.
Tunnel
Unchecked
by
default
Check
the
Enable
box
to
enable
this
PPTP
tunnel.
Save
N/A
Click
Save
button
to
save
the
settings.
Undo
N/A
Click
Undo
button
to
cancel
the
settings.
Back
N/A
Click
Back
button
to
return
to
the
previous
page.
