To avoid openssl and TLS version issue we will update openSSL on server and desktop version of Ubuntu 18.04
We will download it manually, install and make necessary file permission changes.
Let's begin with fetching the tarball from official site.
➜ wget https://www.openssl.org/source/openssl-1.1.1b.tar.gz
Next we unpack the tarball with tar and navigate to newly created folder
➜ tar -zxf openssl-1.1.1b.tar.gz
➜ cd openssl-1.1.1b/
Issue the command
➜ ./config
Issue the command make while you have gcc installed properly
➜ make
Run make test to check for possible errors
➜ make test
Backup current openssl binary
➜ sudo mv /usr/bin/openssl ~/tmp
Issue the command
➜ sudo make install
Create symbolic link from newly install binary to the default location:
➜ sudo ln -s /usr/local/bin/openssl /usr/bin/openssl
Run the command sudo ldconfig to update symlinks and rebuild the library cache
➜ sudo ldconfig
Assuming that there were no errors in executing steps 4 through 10, you should have successfully installed the new version of OpenSSL.
Again, from the terminal issue the command:
➜ OpenSSL openssl version
OpenSSL 1.1.1b 26 Feb 2019
Finally we have to check files and folders permission in /etc/ssl/certs/ and /usr/share/ca-certificates and change newly created file permission:
➜ sudo chmod o+rx ca-certificates.crt
We can check openssl functionality with
➜ openssl s_client -connect <remote_server_addresss>