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I'm trying to find documentation for the TLS version that Qlik Sense supports, but all I find is rather outdated.
Does anyone know if TLS 1.3 is supported, and how to disable other (older) TLS/SSL versions?
As Kabir mentionned and as far as I am aware of TLS 1.3 is not fully supported for Qlik products.
See article :
Regarding your question on how to disable other ssl/tls versions, they are several options to do it (e.g windows registry, powershell) but an easy way to achieve this is with this freeware:
You will only need to uncheck the protocols you no longer require - I would suggest you do the same with the cipher suites you find not enough secured (it can also be done with this tool).
Hope it helps.
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I am not sure its fully supported. To my knowledge it supports 1.2
I found this on support but like you said its outdated -
As it comes to the right protocols, please see the list based on the public available information in November 2017.QlikSense:
For other readers:
You can also user PowerShell to check what SSL/TLS version you have enabled, using the script on this site: https://www.thecodeasylum.com/testing-ssl-and-tls-with-powershell/
(Remember to change the DNS name on the last line in the script.)
And you can check what ciphers you have enabled using the powershell command:
Get-TlsCipherSuite | Format-Table Name
Even TLS 1.2 can have weak ciphers enabled.
You can still check with nmap for Windows. Latest stable release self-installer: nmap-7.80-setup.exe
Immediately shows the protocols used, security level of cyphers, recommendations for unsafe cyphers.
3. run command: nmap -script ssl-enum-ciphers -p 443 your_host.com