2048 bits for openssh and openssl
 

How do I configure and force openssh client and server to use only 2048 bits?
I know that for openssh server, the
/etc/ssh/sshd_config file should have the line:
ServerKeyBits 2048

How do I configure and force openssl client and server to use only 2048 bits?

After configuration, how to confirm the settings?