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Setting up a REAL VNC connection between 2 systems where each have a Linksys router

Posted on 2004-05-02
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Last Modified: 2013-11-30
I live in a community where I have become the local "expert" on PCs.  I am hardly an expert but know enough to help folks in need.  What started as a neighborly gesture has become something quite time consuming.   Most of the problems are simple and if I could find a way to have the neighbor allow me to connect to their system, I could probably help them remotely.  I do this entirely on a volunteer basis and no fees are charged.

I have an XP Home system with a Linksys BEFSR41 wired router.  Most of my neighbors have a similar configuration although some are dialup and some have a Linksys wireless g router.   We all use the same ISP.  I've downloaded Real VNC and have read the documentation several times.  However, not being a network techie, I am not sure that there is a simple way for me to install VNC and its associated settings and router settings so that I can connect to it.  Is there a site that will take me through the setup process for both the client and the server?  I have also read a bit about TIGHTVNC.  Is this a preferred program?   It also appears that the only way to make VNC work is to set each of the systems up with a static IP address.  This is against the recommendations of the ISP.  If I do this, will I affect the connection to the ISP?   If in your work with VNC, you honestly think that I might be getting in over my head,  are there other freeware offerings available?   I also have some concern for opening my system and others to the potential of being hijacked.  However, I am assuming that once the VNC session is completed,  the open router ports will not allow anyone in but I am not clear on this point.   your help as always is appreciated.  

My apologies for asking some elementary questions but I really would like to find a simple solution that will save me some time.  
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Question by:tonyadam
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by:wmilliga
ID: 10974523
You need to use a dynamic DNS service such as no-ip.com or dyndns.org (both free), and install a dynamic dns client on each computer. Then, you will need to forward the port ( I believe tcp 5900) for VNS inu the Linksys router (advanced > forwarding).
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wmilliga earned 125 total points
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You need to use a dynamic DNS service such as no-ip.com or dyndns.org (both free), and install a dynamic dns client on each computer. Then, you will need to forward the port ( I believe tcp 5900) for VNS in the Linksys router (advanced > forwarding).
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by:dramatix01
dramatix01 earned 125 total points
ID: 10979237
Install RealVNC, TightVNC, or Ultr@VNC (Ultr@VNC being the most robust) on each of your neighbors' computers.  During the install process I believe that they will all ask if you want to register VNC as a system service.  Select "Yes" when prompted.  The computer will now be set to receive incoming connections.  Make sure you have a good password set for the service, too.

Now you will need to access the web configuration tool for the Linksys router and click on the "Advanced" tab then the "Forwarding" tab.  In the Ext. Port column, enter "5900" to "5900", check the TCP and UDP boxes, enter the last digit of the computer's IP address that you wish to access, and then check the "enable" box.  Click "Apply" at the bottom of the screen and you should be ready to go.  You may also repeat the forwarding for port 5800 if you wish to use the web based VNC client.

Now go to one of the aforementioned dynamic DNS sites and create an account for each of your neighbors.  You will then need to download and install a dynamic dns updater service on each of your neighbors' computers.  This program will vary depending on which dynamic dns provider you choose.

After all of this complete, you will be able to access your neighbors' computers from home by entering something like neighbor1.homeip.net in your VNC viewer application, or, if you chose to enable and forward the web based VNC client, you can enter neighbor1.homeip.net:5800 in the address bar of a java enabled web browser and gain access.

I hope this helps.  Let us know if you have any other questions or trouble.

Regards,
Dave...
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by:tonyadam
ID: 12168614
My apologies for not clearing this question up earlier.  Thanks.
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