Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
141
Dynamic
DNS
The
required
parameters
for
the
dynamic
DNS
agent
in
the
gateway
system
include
the
DDNS
service
provider,
the
host
name
of
the
gateway,
and
the
user
name
(or
E
‐
address)
and
password
(or
key)
for
authenticating
to
the
service
provider
successfully.
This
device
supports
most
popular
third
‐
party
DDNS
service
provider,
including
DynDNS.org(Dynamic),
DynDNS.org(Custom),
No
‐
IP.com,
TZO.com,
and
DHS.org.
Before
you
enable
Dynamic
DNS,
you
need
to
register
an
account
with
one
of
these
Dynamic
DNS
servers
that
we
list
in
Provider
field.
Once
the
IP
address
of
a
WAN
interface
in
the
gateway
has
changed,
the
dynamic
DNS
agent
in
the
gateway
will
inform
the
DDNS
server
with
the
new
IP
address.
The
server
automatically
re
‐
maps
your
domain
name
with
the
changed
IP
address.
So,
other
hosts
in
the
Internet
world
will
be
able
to
link
to
your
gateway
by
using
your
domain
name
regardless
of
the
changing
global
IP
adress.
Dynamic
DNS
Scenario
Scenario
Application
Timing
When
the
IP
address
of
the
Gateway
is
often
changed
by
ISP,
and
other
hosts
in
the
Internet
want
to
link
to
the
gateway
device
by
using
its
corresponding
domain
name.
The
gateway
must
provide
the
dynamic
DNS
function
to
carry
out
the
requirement.
Scenario
Description
Apply
one
account
to
the
DDNS
provider
for
DDNS
service
before
DDNS
function
in
the
gateway
can
work.
The
gateway
asks
the
DDNS
server
to
re
‐
map
the
domain
name
and
WAN's
IP
address
of
the
gateway
once
the
IP
address
has
been
changed.
