Use UltraVNC - network with CGN / CGNAT or DHCP

[Albireo1]

Hi!
How to use UltraVNC if the computer I want to control has an IP from DHCP?
(the IP is real - but can be changed)

How to use UltraVNC if the computer I want to control has an IP from CGNAT?
(An IP - from the provider (DHCP?) - the provider has an internal (usually unknown ip) - and a local IP address for the computer.)

Or do I have to choose TeamViewer or create VPN.. to solve this?

[Rudi De Vos]

There are service like dyndns that solves this.
Independed of the ip, the server keeps the same dyndns name.
You then connect to mypcByDyndns... that's translated to the correct ip.

[Albireo1]

Is this the service https://account.dyn.com/ you mean?
Can you explain a bit more?
Does it really solve the difficulty of CGNAT?

[Rudi De Vos]

DHCP
Your pc send a message to the service.
I'm account 123456879_uioh and have ip address a.b.c.d, when the ip change he resend a new message with the new ip.

Dyndns run a dns service
nslookup 123456879_uioh-> a.b.c.d
The same as
nslookup uvnc.com -> 46.4.8.173

This solves the issue of dhcp ( your pc get an official ip address)

CGNAT/CGN , never used it
Please read
https://superuser.com/questions/1450607 ... sing-a-vps.

You always can use the ultravnc repeater, this doesn't require ip addresses and works nat2nat