Database SSL Checker

Check SSL/TLS support on common database ports

About Database SSL/TLS

Database connections should always be encrypted with SSL/TLS to protect sensitive data in transit from eavesdropping and man-in-the-middle attacks. Our Database SSL Checker tests whether MySQL, PostgreSQL, MongoDB, and Redis servers accept SSL/TLS connections on their standard ports, helping you identify unencrypted database endpoints that could expose your data.

How to Use

Enter the domain name or IP address of your database server.
Click Check SSL to test SSL/TLS support on common database ports.
Review the results for MySQL, PostgreSQL, MongoDB, and Redis SSL status.
Enable SSL/TLS on any database services that show as not supporting encryption.

Use Cases

Security Auditing: Identify database servers that are accepting unencrypted connections.
Compliance Verification: Ensure database encryption meets PCI DSS, HIPAA, and GDPR requirements.
Configuration Review: Verify that SSL/TLS enforcement is working after database configuration changes.
Cloud Migration: Check SSL/TLS support when migrating databases between on-premises and cloud environments.

Frequently Asked Questions

The tool checks MySQL on port 3306, PostgreSQL on port 5432, MongoDB on port 27017, and Redis on port 6379 by default. It attempts an SSL/TLS handshake on each port and reports whether the database server accepts encrypted connections.

No, this tool only checks if the database server is willing to establish an SSL/TLS connection. It does not verify the certificate's validity, expiry, or trust chain. Use our SSL Certificate Checker for full certificate validation.

This tool checks standard default ports for each database type. If your database uses a custom port, you should manually verify SSL/TLS support using a database client with SSL enforcement enabled. Always use SSL/TLS regardless of the port.

Because database traffic is where encryption quietly goes missing. These connections are made from inside your network, never seen by visitors, and often configured without TLS because nothing forced anyone to add it. When that traffic is unencrypted, credentials and query results travel in the clear across whatever path exists — and the database port being firewalled off the internet does not protect it from traffic inside the perimeter.

No, and it is usually the opposite. Most databases should not be reachable from the internet at all, so a refusal from an external host is correct behaviour. The question is what happens on the internal path. Run the check from a host that legitimately connects to the database and judge that result instead — an external refusal and an internal success are the healthy combination.

It is the strongest verification mode: the server must present a certificate that chains to a trusted root and matches the hostname. Weaker modes encrypt the traffic but accept any certificate, including one an attacker generated — which protects against passive eavesdropping while leaving you fully open to an active man in the middle. For a database holding credentials, verify-full is the setting worth having.

The connection is encrypted but unverified, which usually means the database is presenting a self-signed certificate or one from a private CA. The fix is to distribute the CA certificate to the clients that connect, which then validate properly. This is the same situation the CA trust page reports on web hosts, and private roots are correctly untrusted everywhere else.

Negligibly, in almost every case. Modern CPUs have hardware AES acceleration, so per-connection setup costs a fraction of a millisecond and per-query overhead is smaller still. The real cost is usually elsewhere — connection pool exhaustion if you enable TLS without pooling, or certificate validation performed per connection instead of cached. Measure after changing connection handling, not the cryptography.

How the Check Works

Database traffic is a common place for TLS to be quietly absent, because the connection is made from inside your network and never seen by visitors. This page attempts a real TLS handshake against a database endpoint and reports what it found.

1Attempt the handshake for the database engine you name, against the host and port you give. A completed handshake with a certificate is the pass condition — the connection is encrypted and the server identified itself.
2Report the negotiated protocol and cipher, because a successful handshake on an old protocol is a pass that still needs attention. The two facts together are what you need to decide whether to act.
3Distinguish no TLS from a bad certificate. A refused connection or plain-text server is a different problem from a handshake that fails verification, and the distinction decides whether you enable TLS or fix trust.

Run this from a host that can reach the database — externally only if the port is genuinely exposed. A connection refused from outside and accepted from inside is the normal and correct configuration, and the finding to act on is whether the internal path is encrypted.

Tips & Best Practices

•Verify database SSL/TLS configuration meets security requirements
•Test database SSL connections from application servers
•Monitor database certificate expiry to prevent connection failures
•Use mutual TLS for database authentication when possible

Technical Details

Databases: MySQL, PostgreSQL, MongoDB, SQL Server SSL support
Connection: Database SSL connection testing and validation
Certificate: Database server certificate analysis
Output: Database SSL status with configuration recommendations