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UltraVNC Authentication issue

Posted on 2012-08-24
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Last Modified: 2012-08-30
Say, Under Admin Properties changed password. When trying to connect I get authentication failure. Ive changed password to "1" and same error.
Any suggestions as to how to resolve.
Using default settings and version:10.9.6.1
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Question by:shaunwingin
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Expert Comment

by:emilgas
ID: 38329576
Remove the checkbox DSMPlugin
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Author Comment

by:shaunwingin
ID: 38336477
Tried this but same error
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Author Comment

by:shaunwingin
ID: 38336660
My connection string is PublicIP::port and I get this error - there is a nat rule on the router to translate port to 5900. When I connect using the local ip::5900 the password is accepted...
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Assisted Solution

by:emilgas
emilgas earned 1500 total points
ID: 38337339
That tells you that something is not correctly set up on the router. What other ports are being forwarded on the router? What kind of a router is that?
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Author Comment

by:shaunwingin
ID: 38337423
Mikrotik Router. Forwarding 5901 to IP1; 5902 to IP2 and 5903 to IP3 each IP is on a different PC running VNC and listening on auto. I therefore translate 590x to 5900. Interestingly enough the 5902 /IP2 works remotely to the PC2 - but not the 5901 and 5903. I've checked routers settings and stumped. Issue persists even if PC2 is off.
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Expert Comment

by:emilgas
ID: 38337478
so you manually set the PC1 to run the VNC server on 5901? in that case why is the listening on auto?
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Author Comment

by:shaunwingin
ID: 38338311
no - they all listen on 5900. I set nat rule to direct to IP of PC and Port 5900
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Expert Comment

by:emilgas
ID: 38338360
so in that case you can connect to one computer at a time and that's why only PC2 was working
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Author Comment

by:shaunwingin
ID: 38342712
Say, perhaps if I change listen to port in VNC will solve. How do I do this?
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Expert Comment

by:emilgas
ID: 38342743
Hum... I'm sure there is a way but try searching online. Search for your specific version of VNC since there is the RealVNC UltraVNC TightVNC and many others
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Author Comment

by:shaunwingin
ID: 38342796
I can't believe that UltraVNC doesn't allow one to specify a listen port....
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Expert Comment

by:emilgas
ID: 38342968
what about a command line installation?
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Author Comment

by:shaunwingin
ID: 38343035
sure..how please?
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Accepted Solution

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emilgas earned 1500 total points
ID: 38343139
You can add the line PortNumber=0  to ultravnc.ini
0 means default port which is 5900, so replace it with what you want.

check out this website for more info
http://www.uvnc.com/docs/uvnc-server/69-ultravncini.html
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