OpenSSL v1.1.1 Ubuntu 20 TLSv1 - no protocols available

Question

In Ubuntu 20.04, through a VPN, I can no longer access a server, which uses the TLSv1 protocol.

In Ubuntu 18.04, it was working.

First I connect to the VPN v

Answer 1

I've just solved my problem with - https://askubuntu.com/questions/1233186/ubuntu-20-04-how-to-set-lower-ssl-security-level

Just quoting this link:

You need to add this to the beginning of your config file:

openssl_conf = default_conf

And then this to the end:

[ default_conf ]

ssl_conf = ssl_sect

[ssl_sect]

system_default = ssl_default_sect

[ssl_default_sect]
MinProtocol = TLSv1
CipherString = DEFAULT:@SECLEVEL=1

The comment on the above link said:

Note that if you prefer you can make changes to a local copy of the config file, and then ensure your process is started with the environment variable OPENSSL_CONF defined to point at the location of your config file:

export OPENSSL_CONF=/path/to/my/openssl.cnf

This way you can make changes without having to impact your entire system.

I used the second choice "export OPENSSL_CONF=/path/to/my/openssl.cnf" and worked perfectly!