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Security report for opnsense.org

Deciso · Technology · Netherlands

Medium risk. 6 critical or high findings in Security headers and GDPR outside view.

Security score

57/100

Risk levelMedium

0–100, higher is better. How it is calculated

OPNsense.org is the official website for OPNsense®, an open source firewall and routing platform developed by Deciso. The platform targets enterprises, professionals, and the open source community, offering a free core product alongside a commercial Business Edition with enhanced features. The website demonstrates a mature digital presence with comprehensive content, community engagement, and commercial offerings including official hardware and training. Technically, the site is built on WordPress with modern frontend frameworks and integrates Google Analytics and custom search capabilities. However, a critical security gap exists as the site lacks a valid SSL/TLS certificate and HTTPS support, exposing users to potential risks. Privacy policies and terms of service are present and comprehensive, but cookie consent mechanisms are not implemented. Overall, the site is professional and trustworthy but requires urgent security improvements to protect visitors and maintain credibility.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

6 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

Need hands-on remediation? Email guard@offseq.com

Keep watching opnsense.org

This scan found 22 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
50
Security headers
25
Email security
65
DNS health
85
Network security
90
GDPR outside view
25
Average
57

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The business model combines open source software distribution with commercial offerings such as a Business Edition, official hardware, and training courses. Deciso, the parent company, positions OPNsense as a competitive alternative in the network security market with a decade of innovation and a large global community. The website supports this with testimonials, documentation, and active forums. Partnerships and sales channels include Amazon and an official shop. The company targets medium-sized enterprises and professionals seeking turnkey security solutions. The presence of multiple social media and community links indicates a strong ecosystem and engagement strategy. The lack of phone contact may reflect a digital-first support approach.

Security posture

The security posture of the website is weak due to the absence of HTTPS and an invalid SSL certificate, which is a critical vulnerability. No security headers are implemented, and modern TLS protocols are not enabled. DNS security features like DNSSEC and CAA records are missing, although SPF and DMARC are configured properly for email protection. No explicit security or incident response policies are published, and no security.txt file is found. These gaps expose the site and its users to risks such as data interception and phishing. Immediate remediation is required to install valid SSL certificates, enable HTTPS, and implement security headers and DNS security measures.

Recommendations

  1. Install and maintain a valid SSL/TLS certificate to enable HTTPS across the entire site.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) and disable deprecated versions.
  3. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, X-XSS-Protection, and Strict-Transport-Security.
  4. Deploy DNSSEC and CAA records to enhance domain security and certificate issuance control.
  5. Add a cookie consent mechanism to comply with privacy regulations and improve user trust.
  6. Publish a dedicated security policy and incident response contact information to improve transparency and readiness.
  7. Regularly audit and update third-party scripts and libraries to avoid vulnerabilities.
  8. Consider adding phone contact information for enhanced customer support accessibility.

Contact details published on the site

Addresses
Technical notes

Notes

The website uses WordPress CMS with Bootstrap 5 and jQuery for frontend functionality, supplemented by Select2 for enhanced UI elements. SEO is managed via Yoast SEO plugin, and Google Analytics along with Google Tag Manager are used for traffic analysis. The site is hosted on SectigoWeb nameservers with IPv4 and IPv6 DNS records. Performance is moderate to slow with a page load time of approximately 8 seconds and a large page size (~700KB). Mobile optimization is good, but accessibility features are basic. The absence of HTTPS and security headers represents a significant technical risk. The site architecture is well-structured with clear navigation and rich multimedia content, but technical debt is evident in security configuration and performance optimization.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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