SSL Hardening Guide

Get SSL/TLS hardening recommendations and score

About SSL/TLS Hardening

SSL/TLS hardening is the process of configuring your server to use the most secure version of the TLS protocol while disabling weak and deprecated algorithms. Proper hardening protects against downgrade attacks, protocol vulnerabilities, and cipher suite weaknesses. Our SSL Hardening Guide evaluates your server against industry best practices from OWASP, NIST, and the Mozilla Security Guidelines, providing a hardening score and prioritized remediation steps.

How to Use

Enter the domain name of the server you want to evaluate.
Specify the port if your service runs on a non-standard port.
Click Check to analyze your server's TLS hardening level.
Review your hardening score and follow the recommended steps to improve security.

Use Cases

Security Baseline: Establish a hardening baseline for all servers in your organization.
Compliance Enforcement: Ensure servers meet internal security policies and regulatory requirements.
Vulnerability Remediation: Identify and fix weak configurations after a security incident.
Infrastructure Audit: Conduct regular hardening audits across your server fleet.

Frequently Asked Questions

SSL/TLS hardening involves disabling insecure protocols (SSL 2.0, SSL 3.0, TLS 1.0, TLS 1.1), enforcing strong cipher suites, enabling security features like HSTS and OCSP stapling, and configuring proper key exchange parameters to protect against known attacks.

SSL 2.0, SSL 3.0, TLS 1.0, and TLS 1.1 should all be disabled due to known vulnerabilities (POODLE, BEAST, CRIME, etc.). Only TLS 1.2 and TLS 1.3 should be enabled for modern and secure connections.

A score of 90-100% indicates strong hardening with modern protocols and ciphers. Scores below 70% suggest significant security improvements are needed. Our tool provides specific recommendations to help you increase your score.

Tips & Best Practices

•Start with the most critical fixes: disable SSL 3.0 and TLS 1.0/1.1
•Test configuration changes on staging before applying to production
•Keep a backup of your current working configuration before hardening
•Use the verification tool after applying changes to confirm effectiveness

Technical Details

Protocols: TLS 1.2 and 1.3 configuration recommendations
Ciphers: Curated cipher suites for security and performance balance
Headers: HSTS, CSP, and other security header configuration
Servers: Nginx, Apache, HAProxy, and IIS specific configurations