Inovonics JUSTIN 808, Инструкция по установке и эксплуатации

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from anywhere. Just type
the IP address and port
number into your browser
as shown at the right.
But if your ISP issues you a
dynamic IP, which is very often the
case, this mandates the use of ‘Dynamic DNS,’ using the ser-
vices of an IP-forwarding provider.
Dynamic DNS
It would not be possible to address equipment behind a dynam-
ic IP address if it were not for IP-forwarding providers available
on the Internet. Their services, which are either free or at a
very modest charge, will allow the JUSTIN 808 to keep the pro-
vider apprised of its reassigned IP address each time that ad-
dress is updated by the ISP. The IP-forwarding provider inter-
cepts data attempting to connect with the JUSTIN 808 and con-
verts a stale IP address to the updated one.
There are three popular forwarding service providers available
on the Internet. Their basic service (all you really need) is nor-
mally free of charge, but advanced features might command a
nominal annual fee. All services require registration on the ap-
propriate Website.
Under the
Dynamic DNS
menu, the factory-default selection in
the
Mode:
field is
Disabled
. Click this field for a drop-down list
to choose among the three popular providers. Write down the
provider names and enter each in your Web browser to learn
more about their services, and to register with whichever pro-
vider seems best to meet your needs.
When you register, the provider will guide you through the se-
lection of a
Hostname:
, a
Username:
and a
Password:
. Type these
into the three fields. Next, click Save. The JUSTIN 808 will
communicate with your dynamic DNS provider and confirm
that the data you have entered are correct. When finished, the
screen should approximate the example shown here.