Free External Security Audit Tool

Free External Security Audit Tool from OC Security Audit

Use this outside-in audit questionnaire to review public IPs, firewalls, VPN portals, websites, web applications, DNS, email authentication, cloud endpoints, databases, vendor tunnels, and exposed services.

This tool is for initial guidance only. It does not replace a professional cybersecurity audit, vulnerability assessment, penetration test, compliance assessment, or legal/compliance review.

Start External Audit Request Professional Review

What this tool helps uncover

  • Unknown public IPs, stale DNS, exposed ports, and shadow cloud assets.
  • Risky firewall NAT, VPN, site-to-site tunnel, and remote access exposure.
  • Web app, TLS, DNS, email authentication, WAF/CDN, and cloud misconfiguration gaps.
  • Missing monitoring, remediation ownership, CISA KEV checks, and executive follow-up.

External Audit Coverage Built for IT Teams

Start with what exists on the internet, then answer only the questions that match your public footprint. The tool adds controls based on public IPs, firewalls, websites, DNS, email, VPN, cloud, databases, and vendor exposure.

4External audit domains: scope, perimeter, web/cloud/email, and response.
12Environment scope selectors for common internet-facing assets.
120+Base, documentation, physical edge, technical exposure, and vendor-specific controls.
HTMLExecutive report export with Ali, OCSA, and IT Perfection guidance.

External Environment Scope

Select every internet-facing area that may apply. The detailed questions and controls update automatically.

Generated External Security Audit Report

The report summarizes public exposure readiness, missing controls, technical validation steps, business impact, and remediation priorities.

Answer controls and select Generate Audit Report.

Authoritative References Used for This Tool

NIST SP 800-115

Planning and conducting technical information security tests, analyzing findings, and developing mitigation strategies.

Open NIST guidance
OWASP Top 10

Web application security risks used to structure public web application and API review questions.

Open OWASP Top 10
Microsoft Email Authentication

SPF, DKIM, DMARC, ARC, and email spoofing guidance for Microsoft 365 and cloud mail domains.

Open Microsoft guidance
CISA Known Exploited Vulnerabilities

Reference for prioritizing internet-facing vulnerabilities that are known to be exploited in the wild.

Open CISA KEV catalog
Ali Hassani, CISO and cybersecurity consultant

Created by Ali Hassani, CISO

Ali Hassani brings 25+ years of IT, cybersecurity, compliance, firewall, Microsoft 365, Azure, network security, vulnerability management, and infrastructure experience to OC Security Audit and IT Perfection.

Ali at OC Security Audit Contact OC Security Audit Ali at IT Perfection

Need Help Validating External Exposure?

OC Security Audit can validate findings, review public attack surface, assess perimeter risk, and create a remediation roadmap. IT Perfection can help implement approved fixes through managed IT, cloud, endpoint, backup, server, network, and monitoring support.

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