TLS/SSL Configuration Scanner
Analyzes TLS configuration, cipher suites, and certificate validity.
What is TLS/SSL Configuration?
TLS/SSL Configuration testing evaluates the security of encrypted connections by analyzing protocol versions (TLS 1.0-1.3), cipher suites (encryption algorithms), key exchange mechanisms, certificate validity, and proper implementation. Weak configurations enable interception, downgrade attacks, and data exposure.
Why is This Important?
TLS protects data in transit, but misconfiguration undermines this protection. Legacy protocols (SSLv3, TLS 1.0) have known vulnerabilities. Weak ciphers can be broken. Invalid certificates enable impersonation. Proper TLS configuration is fundamental to web security and compliance requirements.
How It Works
1. Network Discovery
Scans and fingerprints network services, identifying open ports, protocols, and service versions.
2. Protocol Analysis
Tests protocol implementations for misconfigurations, weak encryption, and known vulnerabilities.
3. Infrastructure Assessment
Provides comprehensive network security posture with prioritized remediation recommendations.
Key Capabilities
Enterprise network security assessment covering infrastructure, protocols, and service configurations.
- Comprehensive port and service discovery
- Protocol-specific vulnerability checks
- TLS/SSL configuration analysis
- Legacy protocol detection and assessment
- Network segmentation validation
Frequently Asked Questions
What TLS versions should be supported?
Support TLS 1.2 and 1.3 only. TLS 1.3 is preferred for security and performance. Disable TLS 1.0 and 1.1 (deprecated, known vulnerabilities). SSLv3 and SSLv2 must never be enabled. Browser compatibility is no longer a valid reason for legacy support.
Which cipher suites are considered secure?
Prefer: ECDHE for key exchange (forward secrecy), AES-GCM or ChaCha20-Poly1305 for encryption, SHA-256 or higher for hashing. Avoid: RSA key exchange (no forward secrecy), CBC mode ciphers (padding oracle attacks), RC4, 3DES, MD5, and export ciphers.
What certificate issues should I look for?
Check for: expired certificates, self-signed certs in production, weak signature algorithms (SHA-1), short key lengths (<2048 bit RSA), missing intermediate certificates, mismatched hostnames, and wildcard overuse. Also verify certificate transparency logging.
How do I test TLS configuration?
Use tools like: SSL Labs (ssllabs.com—comprehensive grading), testssl.sh (local testing), nmap ssl-enum-ciphers, and OpenSSL s_client for manual testing. Check against Mozilla SSL Configuration Generator for recommended settings by security level.
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