Checking What SSL and TLS Are In Use
Here’s another command to check what version of SSL and TLS is being used.
<pre lang="bash">
nmap --script ssl-enum-ciphers -p 443 server.domain.com
Result
<pre lang="bash">
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.