remote computer with UltraVNC

[pjibe]

Hi,

I’m connected to a modem via a router. I had to remote one computer of a member of my family with UltraVNC. This member has 2 computers conected via a router to. In the UltraVNC viewer, which IP adress should I use ? I think it’s my supplier IP. How do I access one of the 2 computers with the IP
192.......101 or 102 ?

Thanks a lot

Pjibe

[technut]

To connect to their PC you use the ISP public address of their router.

To access either (or both) of the computers you'll have to set up port forwarding on their router. I don't know what kind of router they have, but here's an example of the kind of configuration you need to add:

Outside port  Internal address  Internal port
TCP 5900      192.168.1.101     5900
TCP 5901      192.168.1.102     5900

If you can't set the Internal port # (if their router doesn't allow that) then it will simply use the same port # as the outside port # (eg. 5901 goes to 5901), in which case and you'll need to change the VNC server properties on the second PC so that its default VNC port # is 5901 instead of 5900.

In your VNC client, to call port 5900 (the first PC) you connect to theirISPaddress:0 and to call port 5901 (the second PC) use theirISPaddress:1.

Make sure you set a good strong password on their VNC server configurations because their VNC connection is now open to the world.

[pjibe]

Thanks for the reply. The router is a D-link wbr 2310 so if you have more hints I would appreciate

thanks again

PS: when yous said :'In your VNC client, to call port 5900 (the first PC) you connect to theirISPaddress:0 and to call port 5901 (the second PC) use theirISPaddress:1.' My knowledge of the software is poor so can you be more specific

[technut]

Let's say your family member's router gets the IP address 24.25.26.27 from their ISP. And based on the port forwarding instructions, the 1st PC accepts connections on port 5900 and the 2nd PC on port 5901.

In the VNC Viewer, the address you enter as the VNC Server address to connect to would be
24.25.26.27:0 - for the 1st PC
24.25.26.27:1 - for the 2nd PC

That's because with VNC, the number you put at the end is added to 5900 to come up with the port # that it calls. So if you put a ":0" at the end of the address (or put nothing at all) then it tries to connect to port 5900. If you put a ":1" at the end it tries to connect to port 5901... etc etc.

That's just a VNC quirk in how they handle addresses.

[pjibe]

Thansk again

I will try it shortly