The Problem: You Installed SSL, But Is It Actually Secure?

Customers ask us every week: “I set up HTTPS on my site, but how do I know it’s actually secure? Are there vulnerabilities I’m missing? Is my configuration up to standard?”

It’s a smart question. Installing an SSL certificate is step one, but proper SSL/TLS configuration involves dozens of settings: cipher suites, protocol versions, certificate chains, key exchange methods, and more. Get any of them wrong, and you could be vulnerable to attacks like POODLE, BEAST, or Heartbleed—even with a valid certificate.

That’s where SSL Labs comes in. It’s a free online tool from Qualys that tests your SSL/TLS configuration against industry best practices and known vulnerabilities. In five minutes, it gives you a letter grade (A+ through F) and a detailed breakdown of exactly what needs fixing.

This guide explains what SSL Labs tests, how to interpret the results, and how to fix common issues—so you can be confident your SSL configuration is actually secure.

What Is SSL Labs (and Why It Matters)

SSL Labs (ssllabs.com) is a free public service from Qualys, a cybersecurity company. It performs a thorough scan of your website’s SSL/TLS configuration, checking for:

  • Certificate validity — Is it expired? Is the chain complete? Is it trusted?
  • Protocol support — Which TLS versions does your server support? (TLS 1.0 is insecure, TLS 1.2 is minimum, TLS 1.3 is ideal)
  • Cipher suites — Which encryption algorithms are enabled? Weak ciphers like RC4 or 3DES can be exploited.
  • Key exchange — How are encryption keys negotiated? Weak methods like export-grade DH can be broken.
  • Vulnerabilities — Is your server susceptible to known attacks like POODLE, BEAST, Heartbleed, or CRIME?
  • Best practices — Does your configuration follow modern security recommendations?

The tool gives you a letter grade (A+ through F) and a detailed report card. An A or A+ means your configuration is secure by current standards. A B or lower means you have vulnerabilities that should be fixed.

Why this matters: Search engines (Google) and browsers (Chrome, Firefox) increasingly penalize sites with poor SSL configurations. A bad SSL score can hurt your SEO rankings and trigger browser security warnings that scare away visitors. More importantly, it means your visitors’ data might not be as secure as you think.

Running your own server? On a Cloud VPS you have full control over SSL settings—this guide shows you how to verify your configuration is secure.

How SSL Labs Works: The Test Process

When you submit your domain to SSL Labs, it performs a multi-stage assessment:

  1. Connection and handshake — SSL Labs connects to your server and completes the TLS handshake, recording which protocols and cipher suites your server offers.
  2. Certificate analysis — It downloads your certificate chain and validates it: expiration date, issuer trust, chain completeness, key strength (RSA 2048-bit minimum, 3072-bit recommended).
  3. Protocol testing — It attempts connections with different TLS versions (1.0, 1.1, 1.2, 1.3) to see which you support. TLS 1.0 and 1.1 are considered insecure and should be disabled.
  4. Cipher suite evaluation — It tests each cipher suite your server offers, marking weak ones (RC4, 3DES, export-grade) and recommending stronger alternatives (AES-GCM, ChaCha20).
  5. Vulnerability scanning — It checks for specific attack vectors: POODLE (padding oracle), BEAST (blockwise CBC), Heartbleed (memory leak), CRIME (compression), and more.
  6. Best practices check — It evaluates configuration against industry standards: HSTS (HTTP Strict Transport Security), OCSP stapling, forward secrecy, and more.

The entire process takes 2-5 minutes. You don’t need to install anything—it’s a web-based scanner that tests your public-facing server.

When You Need SSL Labs (and When You Don’t)

You need SSL Labs when:

  • You just installed SSL — Verify your configuration is correct before going live.
  • You’re migrating servers — Ensure the new server has the same (or better) SSL configuration.
  • You handle sensitive data — E-commerce, login forms, healthcare, financial data all require strong encryption.
  • You want to improve SEO — Google uses page experience signals including security; a good SSL score helps.
  • You’re compliance-focused — PCI DSS, HIPAA, and other standards require proper TLS configuration.

You might not need SSL Labs when:

  • You’re on managed hosting — CWH’s shared hosting, managed WordPress, and managed VPS include pre-configured SSL with A+ ratings. We handle the configuration for you.
  • You’re using a CDN — Cloudflare, Akamai, and other CDNs handle SSL at the edge with their own configurations.
  • You have a simple static site — While still important, the risk profile is lower than for e-commerce or login portals.

Even if you’re on managed hosting, running an SSL Labs test periodically is good practice—it confirms your provider is maintaining security standards.

Practical Example: Testing blog.canadianwebhosting.com

Let’s walk through a real test so you know what to expect:

  1. Visit ssllabs.com/ssltest — Enter your domain (no https:// needed).
  2. Click “Submit” — The test begins immediately. You’ll see progress indicators.
  3. Wait 2-5 minutes — The scan runs through all tests. Don’t refresh.
  4. Review the results — You’ll get a summary page with your grade and detailed sections.

Here’s what a good result looks like for our blog:

  • Overall rating: A+ (the highest possible)
  • Certificate: 100% — Valid, trusted, proper chain
  • Protocol support: TLS 1.2 and 1.3 only (TLS 1.0/1.1 disabled)
  • Key exchange: 100% — Strong key exchange with forward secrecy
  • Cipher strength: 100% — Only strong modern ciphers (AES-GCM, ChaCha20)
  • Vulnerabilities: None detected
  • Best practices: HSTS enabled, OCSP stapling enabled

If your result looks different, don’t panic—the next section explains how to fix common issues.

Common SSL Labs Issues and How to Fix Them

Here are the most frequent problems SSL Labs finds, and how to resolve them:

Issue #1: TLS 1.0 or 1.1 Enabled (Grade Cap: B)

Problem: Your server supports TLS 1.0 or 1.1, which are deprecated and vulnerable to attacks.

How to confirm: SSL Labs shows “Protocols” section with checkmarks for TLS 1.0, 1.1, 1.2, 1.3.

Fix for Nginx:

# /etc/nginx/nginx.conf or site config
ssl_protocols TLSv1.2 TLSv1.3;

Fix for Apache:

# /etc/apache2/mods-available/ssl.conf
SSLProtocol all -SSLv3 -TLSv1 -TLSv1.1

Verify: Restart web server, retest with SSL Labs. TLS 1.0/1.1 should show as “No”.

Issue #2: Weak Cipher Suites (Grade Cap: B or lower)

Problem: Your server offers weak ciphers like RC4, 3DES, or export-grade ciphers.

How to confirm: SSL Labs “Cipher Suites” section shows weak ciphers in orange/red.

Fix for Nginx (modern configuration):

ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;

Fix for Apache:

SSLCipherSuite ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384

Verify: Restart, retest. Weak ciphers should disappear from the report.

Issue #3: Missing HSTS (Grade Cap: A, not A+)

Problem: Your site doesn’t send HSTS headers, which tell browsers to always use HTTPS.

How to confirm: SSL Labs “Protocol Details” shows “HSTS” as “No”.

Fix for Nginx:

add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

Fix for Apache:

Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"

Important: Test HSTS with a short max-age first (e.g., 300 seconds) to ensure it doesn’t break anything before committing to a year.

Issue #4: Certificate Chain Incomplete (Grade Cap: varies)

Problem: Your server doesn’t send the intermediate certificate, causing trust issues in some browsers.

How to confirm: SSL Labs “Certificate” section shows “Chain issues” with “Incomplete” warning.

Fix: Ensure your SSL configuration includes the full chain (server cert + intermediate). For Let’s Encrypt with Nginx:

ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;

Note: fullchain.pem includes the intermediate; cert.pem does not.

Issue #5: No OCSP Stapling (Minor deduction)

Problem: Your server doesn’t staple OCSP responses, requiring clients to check certificate revocation separately.

Fix for Nginx:

ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /etc/letsencrypt/live/yourdomain.com/chain.pem;

Fix for Apache:

SSLUseStapling on
SSLStaplingCache "shmcb:logs/stapling-cache(150000)"

Getting Started: Test Your Site Now

Ready to check your SSL configuration? Here’s a simple workflow:

  1. Test your current site: Go to ssllabs.com/ssltest and enter your domain. Note the grade and issues.
  2. Make one change at a time: Start with the biggest issue (usually TLS 1.0/1.1 or weak ciphers).
  3. Restart and retest: After each change, restart your web server and run SSL Labs again.
  4. Aim for A+: Don’t stop at A—the extra steps for A+ (HSTS, modern ciphers) provide real security benefits.

What you’ll need: A VPS or dedicated server with root access. Shared hosting users should contact their provider—SSL configuration is managed at the server level.

Canadian Web Hosting’s Cloud VPS plans give you full root access to configure SSL exactly how you want. All plans include Canadian data centres, SOC 2 Type II compliance, and 24/7 support if you need help with the configuration.

Not comfortable editing Nginx/Apache configs? Our Managed Support team can configure SSL for you—we’ll set up Let’s Encrypt, optimize cipher suites, enable HSTS and OCSP stapling, and ensure you get an A+ rating.

Conclusion

SSL Labs is the definitive tool for testing SSL/TLS security. It’s free, comprehensive, and gives you actionable feedback to improve your configuration.

The difference between “SSL installed” and “SSL properly configured” is significant. A misconfigured SSL server can be as vulnerable as no SSL at all. Regular SSL Labs testing ensures your encryption stays current with evolving security standards.

Questions about SSL configuration for your specific setup? Contact our team—we’re happy to review your SSL Labs report and recommend fixes, whether you host with us or not.

Related reading: Set up free SSL with our Let’s Encrypt Setup Guide, or protect your WordPress site with our WordPress Security Hardening guide. For a deeper look at SSL certificates, see Wildcard SSL Certificates: When and How to Use Them.

We’ve been securing Canadian websites since 1998. SSL configuration is one of those details that separates professional hosting from “good enough.” Test your site today—it takes five minutes and could prevent a security incident tomorrow.