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Everything You Need for SSL Security
Comprehensive tools to monitor, validate, and secure your SSL certificates
Certificate Validation
Verify SSL/TLS certificate authenticity, chain of trust, and expiration dates instantly.
Lightning Fast
Get comprehensive results in under 2 seconds with our optimized checking infrastructure.
Deep Analysis
Detect vulnerabilities, weak ciphers, and security misconfigurations in your SSL setup.
Expiry Alerts
Set up automated notifications before your certificates expire to prevent downtime.
Detailed Reports
Download comprehensive PDF reports with actionable recommendations for your team.
Multi-Domain Support
Check multiple domains simultaneously and manage all your certificates in one place.
How It Works
Check your SSL certificate security in three simple steps
1
Enter Domain
Type your website domain or IP address into our secure checker.
2
Instant Analysis
Our system scans your SSL certificate and server configuration.
3
Get Results
View detailed security report with grade and recommendations.
SSL definition and history
SSL is an abbreviation and stands for Secure Sockets Layer. It is a cryptographic protocol that provides secure communication between a web server and a web browser. SSL encrypts all communication between the server and the browser, so that if anyone intercepts the communication it is unreadable. SSL is the predecessor to TLS (another abbreviation which standas for Transport Layer Security). TLS is a more modern and secure protocol than SSL, and it is the protocol that is currently used by most websites.
Browser and server communication
When you visit a website that is using SSL, your browser will send a message to the server asking for the website's SSL certificate. The server will then send the certificate back to the browser. The browser will then verify the certificate to make sure that it is valid. If the certificate is valid, the browser will establish a secure connection with the server.
A secure HTTPS connection to a domain (website) with a valid SSL certificate from a trusted certificate authority ensures that all communication between your web browser and the website is encrypted and secure. This means that your personal information, such as your credit card number and password, cannot be intercepted and read by third parties.
Establish a secure HTTPS connection
This process is also called 'handshake' and it involves the following steps:
- The client (web browser) sends a request to the server (website) for a secure connection. This request includes the client's supported cipher suites and the domain name of the website.
- The server sends its SSL certificate to the client. The SSL certificate contains information about the website, such as the domain name, organization name, and expiration date. It also includes the server's public key.
- The client verifies the SSL certificate by checking whether it is issued by a trusted Certificate Authority (CA), whether it has expired, and whether the domain name matches the website's domain.
- The client generates a random session key and encrypts it using the server's public key. The encrypted session key is sent to the server.
- The server decrypts the session key using its private key and uses this session key to encrypt all further communication between the client and the server.
- This entire SSL/TLS handshake process happens behind the scenes in a fraction of a second.
Once the handshake is complete, the client and the server can communicate securely.
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