Background

External NetworkPenetration Testing

Your external attack surface is your organization's front door. Attackers scan for exposed services, unpatched systems, and misconfigurations around the clock. I test your perimeter the same way they do, finding the gaps before they become breaches.

Your External Attack Surface

Every public-facing service is a potential entry point. According to SANS, the average organization has 10-15 internet-exposed services they don't know about.

Web Services

High

Public websites, web applications, admin panels, development sites, forgotten subdomains

Email Systems

High

Exchange, SMTP servers, webmail portals, email security gateways, DNS records

VPN & Remote Access

Critical

SSL VPN, IPSec endpoints, RDP gateways, remote desktop services, Citrix/VMware

Network Services

Medium

DNS servers, FTP/SFTP, file shares, database services, management interfaces

APIs & Integrations

High

REST APIs, webhooks, third-party integrations, microservices, partner portals

Security Appliances

Critical

Firewalls, WAF, load balancers, IDS/IPS with management interfaces exposed

External Testing Methodology

Simulating real-world attackers from the internet with zero prior knowledge of your infrastructure.

Phase 1: Reconnaissance

OSINT gathering from public sources
DNS enumeration and subdomain discovery
IP range identification
Technology fingerprinting
Employee email and social media harvesting
Third-party service identification

Phase 2: Service Discovery

Port scanning and service enumeration
SSL/TLS certificate analysis
HTTP header and banner grabbing
Cloud asset identification (AWS, Azure, GCP)
Shadow IT discovery
Misconfigured services detection

Phase 3: Vulnerability Assessment

Known CVE identification
Misconfigurations and weak settings
Authentication mechanism testing
Default credentials checking
Encryption and certificate validation
Patch level assessment

Phase 4: Exploitation

Exploit development and execution
Authentication bypass attempts
Initial access establishment
Proof-of-concept demonstration
Business impact assessment
Evidence collection and documentation

Common External Vulnerabilities

The CISA Known Exploited Vulnerabilities catalog lists over 1,000 actively exploited vulnerabilities in internet-facing systems.

Unpatched Systems

Critical

Outdated software with known CVEs being actively exploited in the wild

Weak Authentication

Critical

Default credentials, weak passwords, no MFA on external services

Exposed Admin Panels

High

Management interfaces, databases, or internal tools accessible from internet

SSL/TLS Misconfigurations

Medium

Expired certificates, weak ciphers, protocol vulnerabilities

Information Disclosure

Medium

Verbose error messages, directory listings, sensitive data in HTML/JS

Forgotten/Shadow IT

High

Development servers, testing environments, deprecated systems still online

Ready to Test Your Perimeter?

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