Hi,
I created my own SC Tool with the guide from the forums here but I can't get it to work outside of my network. First I put my local IP in the helpdesk file and testet it over LAN. That worked nicely. Then I registered a dyndns and configured it on my Vigor 2800. I forwarded the port 5500 on the router and put the following line in my helpdesk file:
"-connect xxx.dyndns.org:5500 -noregistry"
which neither worked on LAN nor over the internet. To see if it is a dyndns problem I changed the dyndns to my internet IP and tested it that way, but still there was no connection comming through to my listening viewer here.
Any suggestions what could be the problem?
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A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
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- Reddit community: https://www.reddit.com/r/ultravnc
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Problem with UVNC SC Tool
Re: Problem with UVNC SC Tool
Try another port. Some ISP's block 5500 and 5900
Re: Problem with UVNC SC Tool
before change the port, check with ms portquery if port is'nt blocked by third software.
open NAT is many time not enough for some routers.
some router include firewall need open two more things for allow incoming and outgoing connection
you also need open port to software windows firewall if not disabled or another existing on your computer.
you
vncviewer -listen must be running before start msquery.
otherwise, still close.
[topic=3859][/topic]
open NAT is many time not enough for some routers.
some router include firewall need open two more things for allow incoming and outgoing connection
you also need open port to software windows firewall if not disabled or another existing on your computer.
you
vncviewer -listen must be running before start msquery.
otherwise, still close.
[topic=3859][/topic]
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer

