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Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
371
In
"Configuration"
page,
there
is
only
one
window
for
the
Captive
Portal
function.
The
"Captive
Portal
Configuration"
window
can
let
you
enable
the
function,
specify
which
WAN
interface
for
user
authentication,
which
VLAN
group
of
client
hosts
must
pass
the
user
authentication
before
Internet
surfing
and
choose
the
internal
captive
portal
or
the
external
captive
portal.
External
Captive
Portal
Before
enabling
the
external
Captive
Portal
function,
please
go
to
[System]
‐
[External
Servers]
to
setup
external
server
objects,
like
RADIUS
server
and
UAM
server.
Then
return
to
configure
Captive
Portal
function
back
in
this
page
to
specific
WAN
Interface,
select
external
Authentication
Server
and
UAM
Server
from
the
pre
‐
defined
external
server
object
list.
Internal
Captive
Portal
Before
enabling
internal
Captive
Portal
function,
please
go
to
[System]
‐
[External
Servers]
to
define
some
external
server
objects,
like
LDAP
server
or
AD
server
if
necessary.
Then
return
to
configure
Captive
Portal
function
back
in
this
page
to
specific
WAN
Interface,
select
“Internal
RADIUS
Server”
option
for
user
authentication
and
specify
its
user
database
to
be
the
embedded
one,
an
external
LDAP
server
or
an
external
AD
server
from
the
pre
‐
defined
external
server
object
list.
NOTE:
All
Internet
Packets
will
be
forwarded
to
Captive
Portal
Web
site
of
the
gateway
when
Captive
portal
feature
is
enabled.
Please
make
sure
that
at
least
one
user
account
is
created.
Internal
Captive
Portal
Scenario
Scenario
Application
Timing
When
your
purchased
gateway
has
the
"Captive
Portal"
function
and
the
administrator
wants
to
ask
specific
users
to
execute
an
authentication
process
before
their
Internet
surfing
via
the
gateway.