M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
106
3.9.7
DMZ
&
Pass
Through
DMZ
(De
Militarized
Zone)
Host
is
a
host
that
is
exposed
to
the
Internet
cyberspace
but
still
within
the
protection
of
firewall
by
gateway
device.
So,
the
function
allows
a
computer
to
execute
2
‐
way
communication
for
Internet
games,
Video
conferencing,
Internet
telephony
and
other
special
applications.
In
some
cases
when
a
specific
application
is
blocked
by
NAT
mechanism,
you
can
indicate
that
LAN
computer
as
a
DMZ
host
to
solve
this
problem.
In
"DMZ"
page,
there
is
only
one
configuration
window
for
"DMZ"
feature.
The
window
lets
you
activate
the
DMZ
function
and
specify
the
IP
address
in
the
Intranet
to
be
DMZ
host
so
that
the
host
under
DMZ
function
can
run
applications
freely
that
would,
otherwise,
blocked
by
NAT
mechanism
of
the
gateway
with
DMZ
feature
disabled.
That
is,
the
incoming
packets
issued
by
an
active
application
in
the
Internet
are
usually
blocked
outside
of
the
NAT
gateway.
But
the
DMZ
host
can
receive
those
packets
and
make
replies.
That
is,
it
is
reactive
to
outside
world.
In
the
meantime,
it
is
also
protected
by
the
gateway
firewall.
Configuration
This
feature
allows
you
to
ask
the
gateway
pass
through
all
normal
packets
to
the
DMZ
host
behind
the
NAT
gateway
only
when
these
packets
are
not
expected
to
receive
by
applications
in
the
gateway
or
by
other
client
hosts
in
the
Intranet.
Certainly,
the
DMZ
host
is
also
protected
by
the
gateway
firewall.
Activate
the
feature
and
specify
the
DMZ
host
with
a
host
in
the
Intranet
when
needed.
