On Thursday 16 November 2006 15:53, [EMAIL PROTECTED] wrote:
> My home computer has a Linksys 54G wireless router and my work laptop has
> the wireless card.  VNC software is loaded on both.  I can see and control
> the desktop through the laptop by mousing over the VNC icon and entering
> the IP address in the VNC viewer installed on the laptop.  Very cool.

When you are connected to the desktop in this way your laptop is within the
LAN (it has been given an IP address from the router that is reserved for
local network connections).  The packets between the two machines do not
enter the Internet, i.e. they do not leave your local network and therefore
are not filtered by your router.

> But when I go to work and try to connect to my home desktop, I cannot.  Now
> I'm sure many of you are saying "duh, of course not" because you know
> something about forwarding.  I don't, and I am damned afraid to start
> screwing around with the Router for fear of losing the Internet connection.
>  Does someone have an easy-to-follow guide that I can use?

When you are at work you probably have up to two more obstacles to overcome
before you can connect:  Your works firewall/gateway which may be blocking
outbound communications on the remote port you are seeking to connect (e.g.
filtering outbound packets to any IP addresses' port 5900), and; secondly your
dad's router which will block by default any incoming connection which was
not invited by your dad's PC in the first place.  To allow such an incoming
connection through your dad's router you can use port forwarding.  Many
previous posts in this ML and links offered in the FAQs and documentation on
the Real VNC website provide instructions for achieving just that (probably
inc. your type of router).  Alternatively, some home routers allow the set up
of a VPN tunnel with remote machines.  Using that facility (follow the
manufacturer's documentation and wizards) should allow you to connect to your
dad's machine as if you were inside the same LAN.  This is by far a safer
method than opening ports at the router to all and sundry.  Finally, you
could try this the other way round to overcome the router firewall problem
(blocking uninvited incoming connections):  invite your laptop's IP address
to connect to your dad's WinXP from your dad's VNC server.  Use the
instructions in the Real VNC docs to add a user to the VNC server.  Then
enter the laptop's internet IP address in the popup window at the VNC server
and you should be good to go as long as the laptop has a VNC viewer running
in listening mode.

To overcome the work-->home problem due to a restrictive work's firewall, you
can use the VNC java option by setting it up on your home/dad's VNC server.
Then you can use a browser on your laptop with java enabled to connect to
your dad's machine.  Again the Real VNC documentation for WinXP offers ample
guidance on this.  If your work's network has a fixed internet IP address
then use this in the Server configuration Connections tab to limit
connections to your home machine from only this address (additional
security).

I hope this helps.
--
Regards,
Mick

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