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Using TightVNC To Remotely Control Another PC


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Posted

I've used TightVNC to connect to my Laptop and Netbook from my Desktop, but they are all on the LAN.

I now want to connect to a friend's PC to sort out his problems. So how do I connect over the Internet?

I've tried connecting to my Netbook from the Desktop over the Internet, but failed.

I set up port forwarding on the modem so the port that the TightVNC Viewer on my Desktop uses to connect to the Netbook is forwarded to the Netbook.

In fact, I can connect to the Netbook using IP address 192.168.1.3::5678, where 5678 is the port I've set as the Web access port in the TightVNC Server on the Netbook.

I can also connect using 192.168.1.3::6543, where 6543 is the port I've set as the Main server port in the TightVNC Server on the Netbook.

If I don't specify either of those ports, or no port, the connection times out - so those ports must be correct.

But I can't get these connections to work if I substitute the external IP address for the local IP address.

I'm using XP on both machines.

Any thoughts?

Posted (edited)

I had to use a "standard port" on my external network interface, so i forwarded 80 -> 5901 - it's common for ISP's to not allow ports above 1024 for inbound, and are lax on securing incoming for standard services, like 25, 53, 80, 443 etc. Also make sure you're forwarding both TCP & UDP.

If you can't get that working, give "Teamviewer" a shot smile.png

Edited by phazey
Posted

I had to use a "standard port" on my external network interface, so i forwarded 80 -> 5901 - it's common for ISP's to not allow ports above 1024 for inbound, and are lax on securing incoming for standard services, like 25, 53, 80, 443 etc. Also make sure you're forwarding both TCP & UDP.

If you can't get that working, give "Teamviewer" a shot smile.png

Hi Phazey - my Vuze (Azureus) client uses ports around 55,000 for incoming connections, and I always get remote connections, so I don't think the ISP is blocking them. (Maybe I should try those really high port numbers in TightVNC smile.png)

The router/modem says it's forwarding "ALL" protocols.

I was wondering if there was a Service I had to enable to get it to work or a firewall setting I had to change. I'm using the Windows Firewall and Quihoo 360 Inerent Security which does all sorts of protection. Maybe I could try turning them off for a while?

w00t.gif

Posted

Just use Teamviewer QS. Free and works fine, with no configuration at all.

Also agree on Teamviewer. Use it for several computers including home and access to my office computers and works very well.

I may be thinking of a different product that I tried some time ago, but don't you need to pass an account name and password through the Team Viewer web site? That would seem to be a security risk if that is the case.

If not, I'll give it a go.

Posted (edited)

No it's all local, and if it was a security risk, I, for one, would not recommend it. smile.png You could be thinking of LogMeIn

Edited by phazey
  • Like 1
Posted

No it's all local, and if it was a security risk, I, for one, would not recommend it. smile.png You could be thinking of LogMeIn

Team Viewer and LogMein have similar security protocols, the main difference now is that LogMein is no longer free, you have to purchase a subscription, where Team Viewer remains free for personal use

Posted

No it's all local, and if it was a security risk, I, for one, would not recommend it. smile.png You could be thinking of LogMeIn

Team Viewer and LogMein have similar security protocols, the main difference now is that LogMein is no longer free, you have to purchase a subscription, where Team Viewer remains free for personal use

And.. TeamViewer works flawlessly on Mac - LogMeIn is buggy crap on OSX.

Posted

No it's all local, and if it was a security risk, I, for one, would not recommend it. smile.png You could be thinking of LogMeIn

Ah, yes! That's the one. The idea of giving a web site my user name and password makes me uncomfortable. ohmy.png

Posted

You dont give logmein your details either, it is stored locally, same as vnc would do if you tick remember details.

Use logmein and it will need username and password to access (good security). Click remember credentials and next time is easy. Try it from another machine and you need to enter again, nothing stored.

Logmein has a double layer of security, one login for the account and presumably different details for the computer. If you know the teamviewer id only a single password needed.

That said both teamviewer and logmein are powerful, easy and secure remote access solutions. Use and recommend them both (but not on mac). Vnc is very good too but needs configuration, typically ddns and port forwarding.

  • Like 1

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