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How to Fix the “Your Connection is Not Private” Error in pfSense

by | Feb 19, 2025

Learn how to fix the “Your Connection is Not Private” error in pfSense. Our pfSense Support team is here to help you with your questions and concerns.

How to Fix the “Your Connection is Not Private” Error in pfSense

How to Fix the "Your Connection is Not Private" Error in pfSenseThe “Your Connection is Not Private” error in pfSense is a browser security warning that indicates issues with SSL/TLS certificate validation or network configuration.

According to our Experts, this error occurs when a browser cannot verify a website’s security certificate, preventing access to protect users from potential security threats.

Impacts of the Error

  • Users are unable to access websites due to certificate validation failures.
  • Indicates issues with network configuration or SSL/TLS certificates.
  • Browsers block access to protect users from security threats.
  • Prevents access to specific websites or services.
  • Different browsers may handle the error differently.
  • Can signal underlying DNS or network misconfigurations.
  • Prevents secure connections to web services.
  • Limits access to HTTPS-secured websites and internal network resources.
  • Affects both internal and external network communications.

Common Causes and Fixes

1. Invalid SSL Certificate

  • Expired SSL certificates.
  • Self-signed certificates are not trusted by browsers.
  • Incorrect certificate type (user vs. server certificate).
Click here for the Solution.
  • Use Let’s Encrypt to automatically manage free certificates.
  • Import trusted CA certificates and verify the certificate chain.
  • Head to System > Certificate Manager to check configurations.

2. Incorrect Date and Time Settings

A misaligned system clock disrupts SSL validation.

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  • Enable Network Time Protocol (NTP) and configure reliable servers.
  • Adjust settings and restart networking services if necessary.

3. Network Configuration Issues

Misconfigured NAT rules and restrictive firewall settings.

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  • Allow HTTPS traffic and enable stateful packet inspection.
  • Verify external and internal port mappings.

4. Browser-Specific Problems

Corrupted cache, outdated SSL/TLS settings, or browser security restrictions.

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Clear cache, disable extensions, update the browser, and try incognito mode.

5. Public Wi-Fi Interference

Untrusted network environments and potential connection interception.

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Use a VPN for encrypted connections and avoid untrusted public networks.

6. HAProxy or SSL Interception Issues

Misconfigured SSL offloading and incorrect certificate termination.

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Audit HAProxy settings and verify SSL certificate chains.

7. DNS and Routing Problems

Incorrect DNS resolution, routing table misconfigurations, or gateway errors.

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Verify DNS server settings, flush cache, and check domain name records.

8. Subnet or VLAN Configuration Issues

Incorrect VLAN tagging and routing conflicts between network segments.

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Review VLAN configurations and verify routing tables.

Prevention Strategies

  • Keep pfSense and SSL certificates updated.
  • Implement robust firewall rules.
  • Use trusted Certificate Authorities.
  • Monitor network configurations regularly.
  • Ensure accurate system time and proper SSL/TLS configurations.

[Need assistance with a different issue? Our team is available 24/7.]

Conclusion

Following these steps, we can effectively diagnose and resolve the “Your Connection is Not Private” error in pfSense while maintaining a secure and reliable network environment.

In brief, our Support Experts demonstrated how to fix the “Your Connection is Not Private” error in pfSense.

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