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VNC - Making it work externally?

By TomSal ·
Ok here's the deal - I'm loving how VNC works. I'm using it on our LAN in limited fashion for aiding us in troubleshooting client's desktops remotely.

I'd like to bring it a step further now though and I'd like to know how to get VNC to work through the Internet (external from our LAN).

We do NOT have a DNS server. But since our clients are using the class C private (reserved) address scheme (192.168.1.X) that's obviously neither routable or unique.

How could I get my computer at my house to connect to my system at work using VNC?

The clients are all Win98SE

Servers that are relevant to those clients are all Win NT 4

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...

I forgot to mention, that points will only be given for solutions that work. Information only that doesn't lead to working solution will be rejected.

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VNC - Making it work externally?

by Kahless1972 In reply to VNC - Making it work exte ...

The routing issue may be a problem but i had to point vnc to the default gateway to make a connection on the machine.One real good solution is to add a second nic card with a dedicated outside Ip address and go thru it that way you will still have total access to your machine, and any network applications you may have access to.Be fore warned if you are running a firwall, you will have to configure it to allow the program.

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...
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VNC - Making it work externally?

by D_V Ant In reply to VNC - Making it work exte ...

Your first task is going to be setting up a connection to your network from home. This can be done either with RAS or a VPN connection. Once the connection is working, you will be "on the netork" and VNC will work the same as it does from the office.

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...

Thanks for taking the time to respond. However if I already had a true VPN -- I wouldn't need VNC at all. VNC is inferior to VPN, it just happens to be free. :)

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VNC - Making it work externally?

by squirrel01 In reply to VNC - Making it work exte ...

The machine you are trying to connect to must have an external IP address you can download a free DNS client and make that computer part of a sub-domain. I recommend the freeware DNS Client NO-IP which can be downloaded from www.no-ip.com. Installthat application on the host computer and then register with NO-IP.com a subdomain name. If the computer you wish to connect to is behind a router or firewall you will have to route port 5900 to that computer or open poft 5900 and allow the VNC application access thru the firewall. Also remember to leave VNC open in the listen mode or you will not be able to connect. I would also check with the Network Administrator to see if these actions would be allowed on your network, because any open ports or visible ip addresses leave your LAN at potential risk. I know this solution works because I use it to access my home computer from work.

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...

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VNC - Making it work externally?

by Choppit In reply to VNC - Making it work exte ...

Assuming you have a permanent connection and a NAT router you should be able to port forward 5900 external to the system you want to control. If you want to control a handful of systems then set each to use a different port. If you have a static WANaddress you should have no problem, if not, use a dynamic DNS service such as DNS2GO. Your aim could be achieved this way although I wouldn't recommend using VNC over the web except via a VPN.

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...

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VNC - Making it work externally?

by TomSal In reply to VNC - Making it work exte ...

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