Setup Dynamic Dns Services - Universal Devices ISY-994i User Manual

21.3.2

Setup Dynamic DNS services

Most Internet Service Providers (ISP) use dynamic ISP addresses, this means that your ISP
address can change at any time. It is suggested you use a dynamic DNS service that will give
you a static web address to reach your ISY at all times. In order to keep the address static
these services either use your router to auto update or have a small program that runs on
your local computer which will update the DNS servers that your IP has changed. It's a
good solution when you don't want to obtain a costly static address from your internet
provider. There is many providers out there but here is a couple recommendations:
DynDNS or tzoDNS.
21.3.3 Creating an ISY Self Signed Certificate
To eliminate the problem of being warned all the time about the default certificate the first
thing that is suggested is to creating a Self-Signed Certificate. Other details can be found in
the section 21.6.1.8Certificate Management
• You must be on the same local network as the ISY.
• See 21.7 Internet Explorer SSL Certificate Install for more details about
accepting it when using we browsers.
21.3.4 Changing HTTPS Port Number
If your router is complaining about port 443 already being used, it means that you already
have another network device (in your LAN) which uses 443 and thus the router will only
forward the requests to that device. For reference here is a List of TCP and UDP port
numbers http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
Wikipedia.
Figure 368: External IP Address
from the
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