After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
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

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TLS for VNC

Any features you would like to see in UltraVNC? Propose it here
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RaptorITA
Posts: 1
Joined: 2018-09-18 13:02

TLS for VNC

Post by RaptorITA »

Hello,

TigerVNC, an actively developed open-source VNC server (also for linux), allow the encryption of all the VNC traffic using TLS; this add extra security for the VNC connection without using a SSH tunnel.

To connect to a VNC secured with TLS, the viewer client must support this feature (as the TigerVNC viewer does).

It would be nice if this feature will be available also on UltraVNC viewer.

You can find more detail about TLS for VNC here:

https://www.auto.tuwien.ac.at/~mkoegler ... php/tlsvnc
User avatar
Rudi De Vos
Admin & Developer
Admin & Developer
Posts: 6978
Joined: 2004-04-23 10:21
Contact:

Re: TLS for VNC

Post by Rudi De Vos »

Ultravnc already have encryption.
Adding support for an other encryption can possible be done by some dsm plugin.
A lot of work...

Current specs
Default configuration uses 2048-bit RSA keys and 256-bit AES keys.
RSA public-key cryptography supports 512-, 1024-, 2048-, and 3072-bit keys.
Configurable choice of symmetric ciphers and keys:
AES: Supports 128-, 192-, and 256-bit keys.
Blowfish: Supports 56-, 128-, 192-, 256-, and 448-bit keys.
IDEA: Supports 128-bit keys.
CAST5: Supports 56- and 128-bit keys.
ARC4: Supports 56-, 128-, 192-, and 256-bit keys.
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