TLS Configuration Auditing with Nmap

The server waited, silent, revealing nothing. You sent a single packet, and everything it knew about TLS came back in code. That’s the power of using Nmap for TLS configuration auditing — fast, exact, no guesswork.

Nmap is more than a port scanner. With its NSE (Nmap Scripting Engine), it can interrogate a target’s TLS setup in detail. The ssl-enum-ciphers script lists every cipher suite available, along with key lengths, protocols, and security grades. This is the quickest way to see if a server is exposing outdated protocols like TLS 1.0 or weak ciphers that should be disabled.

Run it like this:

nmap --script ssl-enum-ciphers -p 443 example.com

The output will show protocol versions (TLS 1.2, TLS 1.3), cipher strengths, and whether Perfect Forward Secrecy is enabled. You can spot vulnerabilities instantly. For certificate inspection, use:

nmap --script ssl-cert -p 443 example.com

This reveals issuer information, expiration dates, and key sizes so there’s no guessing about when to renew or which CA is in use.

For deeper analysis, combine scripts. Example:

nmap --script ssl-enum-ciphers,ssl-cert -p 443 example.com

This joint output lets you map the complete TLS configuration from protocol down to certificate details in one run. Automate it across your infrastructure to ensure every endpoint meets security policy.

Strong TLS configuration is now a baseline requirement for security and compliance. Nmap makes it simple: one command, full visibility. Weak config means real risk; proper testing means confidence.

See your TLS configuration mapped with precision, no setup required. Check it against live targets in minutes at hoop.dev.