Thanks again for your help and advice!
Phil

On Fri, Apr 5, 2024 at 7:24 PM 'DRC' via TurboVNC User Discussion/Support <
turbovnc-users@googlegroups.com> wrote:

> My bad. permitted-security-types is the correct directive for
> /etc/turbovncserver-security.conf. You can also set the $securityTypes
> variable in /etc/turbovncserver.conf or ~/.vnc/turbovncserver.conf. The
> difference in the two approaches is that permitted-security-types in
> /etc/turbovncserver-security.conf specifies a set of allowed security
> types, and a security type cannot be enabled on the command line or in
> turbovncserver.conf unless it is allowed.
>
> Refer to the User’s Guide for a description of the various security types.
> Yes, VNC is unencrypted and uses VNC password authentication. The default
> security type is TLSVnc, so VNC will behave like the default, just without
> built-in encryption.
>
> On Apr 5, 2024, at 8:02 PM, Phil Marsh <p...@carbonicsinc.com> wrote:
>
> Thanks for your advice!
> It appears that
>  Put ‘SecurityTypes=None’ in /etc/turbovncserver-security.conf on the host.
> gives a syntax error.
> I did download and install
>
> https://github.com/TurboVNC/turbovnc/blob/main/unix/turbovncserver-security.conf
> to /etc
> and added the line:
> permitted-security-types = VNC
> Does that remove encryption from all clients which connect to this host
> via TurboVNC?
> Thanks
>
> On Monday, April 1, 2024 at 8:55:57 PM UTC-6 DRC wrote:
>
>> Multiple ways:
>>
>> 1. Pass ‘-securitytypes vnc’ on the command line when starting the viewer
>> (e.g. ‘/opt/TurboVNC/bin/vncviewer -securitytypes vnc’ or ‘“c:\program
>> files\turbovnc\vncviewer.bat” -securitytypes vnc’.)
>>
>> 2. Pass ‘-securitytypes vnc’ on the command line with starting the server
>> (e.g. ‘/opt/TurboVNC/bin/vncserver -securitytypes vnc’.)
>>
>> 3. Disable the encrypted security types under the “Security” tab of the
>> TurboVNC Viewer Options dialog in the TurboVNC Viewer. (Note that the
>> viewer stores options independently for each host.)
>>
>> 4. Put ‘SecurityTypes=vnc’ in /etc/turbovncserver-security.conf on the
>> host.
>>
>> 5. Put ‘SecurityTypes=vnc’ in ~/.vnc/default.turbovnc on the client.
>>
>> You could also replace ‘vnc’ with ‘otp’ to use a one-time password
>> instead of a permanent VNC password or ‘none’ to use no authentication at
>> all (not recommended if the network or host are shared.)
>>
>> On Apr 1, 2024, at 10:27 PM, Phil Marsh <ph...@carbonicsinc.com> wrote:
>>
>> Hi,
>>
>> I was wondering how to disable encryption for a TurboVNC connections on
>> my LAN.
>> I'm running Ubuntu 22.04.
>> I would like to disable encryption because I trust my LAN's security and
>> encryption reduces connection speed while adding very little security.
>> Also, for remote connections from the internet, I tunnel TurboVNC through
>> an OpenVPN connection which is already secure and encrypted. Again, here
>> additional encryption will just slow down the connection without adding
>> much security.
>> Thanks in advance!
>> Phil
>>
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