Thank you rvk for that informations. I downloaded and tested trunk (r266). But this still does not work:
1) With Unit 'ssl_openssl11' I get Error "1408F10B:SSL routines:ssl3_get_record:wrong version number" at Login.
Command "writeln('SSLImplementation=', SSLImplementation = TSSLOpenSSL)" still shows TRUE.
2) With Unit 'ssl_openssl3' I get again Error "SSL/TLS support is not compiled!" at Login.
Command "writeln('SSLImplementation=', SSLImplementation = TSSLOpenSSL3)" now shows FALSE.
Does this mean, one of my libraries is bad or missing? Which one?
The only openssl library which I found is:
hg6@i3300:/usr/lib/x86_64-linux-gnu/ruby/2.5.0$ ls -l openssl*
-rw-r--r-- 1 root root 350120 May 24 2022 16:47 openssl.so
Please pay attention to it's directory ".../ruby/2.5.0" which looks strange to me.
Packet Manager Synaptic says that I have openssl ver 1.1.1-1ubuntu2.1~1 installed and does NOT offer another version to install (nothing which starts with "openssl").