checking what ssl and tls are in use
Here’s another command to check what version of SSL and TLS is being used.
nmap --script ssl-enum-ciphers -p 443 server.domain.com
Result
PORT STATE SERVICE
443/tcp open https
| ssl-enum-ciphers:
| TLSv1.2:
| ciphers:
...
In this example, only TLSv1.2 is in use. For security purposes, use TLSv1.2 or higher.