Mailing List Archive

Thank you very much for the prompt reply.
I was able to get my laptop to run RealVNC server this morning after going much deeper into Avast and manually allowing port 5900 for the Server connection.

I had a another friend successfully gain access to my laptop over his iPhone.

As my original problem will still exist on my other friend's laptop I am trying to connect to it seems I will have to learn how to properly set his Vipre Firewall like I did for Avast.

What clouded the issue, an I certainly would appreciate some enlightenment here, is CanYouSeeMe reported success over port 5900 but it was obvious my firewall (and I am sure my friend's firewall) was blocking that port for this application. I seem to be quite ignorant of why one application seems to get through but another does not.

Thanks again.

----- Original Message -----
From: "Philip Herlihy" <Philip@Walthamsoft.com>
To: "Mike Wurlitzer" <wurlitzer28@yahoo.com>, vnc-list@realvnc.com
Sent: Wednesday, July 30, 2014 6:53:19 AM
Subject: RE: Cannot get RealVNC server connected through port 5900

Not sure how much of the essentials you have under your belt, so forgive me
if I spell out too much!
For a successful connection, you have to be able to reach the destination's
router (either static public IP or using Dynamic DNS). Then the router
needs to be configured to pass 5900 through to the desired machine (see
portforward.com for tips). Then that machine's firewall has to be open to
5900, and VNC Server needs to be prepared to accept traffic from the
client's public IP address. With all those ducks in a row, it should work.

People often struggle to set up router port forwarding - especially at the
'server' end (the people who need help). So one option is to get them to
right-click the VNC icon and pick "add new client" (or similar words) and
enter *your* current public IP address (or Dynamic DNS name). That sends
traffic on 5500 (different!) to your router, which then has to pass 5500 to
your preferred machine, whose firewall needs to be open to 5500, and you
have to have a 'listening' VNC client running. This is often easier, as the
'smart' end of the relationship has a better chance of getting the various
configurations right at their end!

Hope that helps.

Best wishes,
Philip Herlihy


-----Original Message-----
From: vnc-list-bounces@realvnc.com [mailto:vnc-list-bounces@realvnc.com] On
Behalf Of Mike Wurlitzer
Sent: 30 July 2014 03:16
To: vnc-list@realvnc.com
Subject: Cannot get RealVNC server connected through port 5900

Used RealVNC years ago for work without any problems on another computer.

Fast forward 5 years, now that I am retired and I cannot get the Server to
connect via the internet. I get the following error messages on BOTH
computers even though I used CanYouSeeMe to verify that port 5900 can be
accessed over the web and both computers passed that test . Both laptops use
static IP.


VNC Server appears to be behind a NAT router with IP address xx.xxx.xxx.xxx
. You will need to configure that router to forward port 5900 to this
computer before you can connect to VNC Server over the Internet

One PC is Windows Vista and my computer is Windows 7. All I wanted to do is
access my friend's laptop when he needed help but seems I am the one needing
help.

I verified that his Viper Firewall allowed 5900 to pass as does my AVAST .

I tried both laptops at his house via his LAN and RealVNC worked perfectly
but again neigher RealVNC Server can connect via the internet.
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