I am using Dynamic DNS for the Remote Rig radio box. I added a Webswitch to turn power on/off to an amplifier. Do I use the same Dynamic DNS information for the Webswitch or do I create a separate DynDNS account for the Webswitch?
It's equal. If you using different (1 or 2 or 3 or) DynDns services, its always the same IP you have! Each Router get only one IP from your provider. This IP will stored in your router. DynDns get this IP by a small upload tool or (in most cases) the router send the IP always to your DynDNS (if you have activated this function)
You have to use different ports - that is the key for you!
80 ist your web
12000, 11000,560x used by RemoteRig
21 by FTP
It's up to you to define a free port for use other Hardware/Server
This new port must configured in your WebSwitch/Server
and in your Router.
Both together give the connection
If you not place this port in your router the "door" is closed for external internet use.
Sorry for bad english
73 Chris