External network penetration testing is a manual security assessment in which certified ethical hackers attack your internet-facing perimeter - public IP ranges, exposed services, ports, VPNs, mail and web servers - to find and safely exploit the weaknesses a real attacker would use to gain a foothold. CyberXplore combines OSINT-driven reconnaissance with senior-led manual testing aligned to PTES and NIST SP 800-115, surfacing exposed services, missing patches, and configuration flaws that scanners alone rate as noise - then delivers prioritized remediation guidance and free retesting.
PTESNIST SP 800-115OSSTMMMITRE ATT&CK
Why CyberXplore
Senior-only testers (OSCP, CRTP, CREST)
ISO 27001 & ISO 9001 certified
Free retest + attestation letter
Tailored scope and quote in 24 hours
Why it matters
Your internet-facing perimeter is the first thing every attacker scans - a single exposed admin panel, forgotten service, or unpatched VPN can become the entry point for a full breach.
Attack surfaces drift constantly: shadow IT, expired certificates, default credentials, and newly published CVEs mean what was secure last quarter may be exploitable today.
Automated scanners flag thousands of low-confidence issues but miss exploitable chains, weak authentication, and the real-world impact that only manual validation confirms.
Customers, cyber-insurers, and frameworks like SOC 2 and ISO 27001 increasingly require independent external penetration-testing evidence on your public-facing infrastructure.
Aligned with industry standards: PTES · NIST SP 800-115 · OSSTMM · MITRE ATT&CK
Our methodology
01
Scoping & Rules of Engagement
We confirm in-scope IP ranges, domains, and hosts, define testing windows and exclusions, and agree clear rules of engagement so testing stays safe and authorized.
02
OSINT & Reconnaissance
We map your true external footprint using open-source intelligence - subdomains, leaked credentials, exposed assets, certificate transparency, and forgotten infrastructure that expands the attack surface.
03
Enumeration & Service Discovery
We fingerprint every exposed port and service, identify software versions, and enumerate the perimeter to pinpoint where weaknesses in patching and configuration are most likely to exist.
04
Vulnerability Analysis
We correlate discovered services against known CVEs, weak protocols, default and reused credentials, and misconfigurations, manually validating each finding to eliminate false positives.
05
Exploitation
We safely exploit and chain confirmed weaknesses to demonstrate real impact - proving how an attacker could gain access or pivot - without disrupting production systems.
06
Reporting & Retest
You receive a clear report with severity ratings, evidence, and remediation steps, followed by free retesting to verify every issue is fixed.
What we test
Public IP ranges, hosts, and internet-facing assets
Exposed ports, services, and software version fingerprinting
OSINT, subdomain, and attack-surface enumeration
Missing security patches and known CVE exploitation
Security misconfigurations and insecure defaults
Weak, default, or reused credentials and exposed login portals
VPN, RDP, SSH, and remote-access endpoints
Mail servers, DNS, and supporting infrastructure
TLS/SSL configuration and weak or expired certificates
Firewall, perimeter filtering, and exposed management interfaces
What you get
Executive summary for leadership and non-technical stakeholders
Detailed technical findings with CVSS severity and supporting evidence
Step-by-step reproduction for every confirmed vulnerability
Prioritized, actionable remediation guidance for your team
External attack-surface inventory of discovered hosts and services
Free retest with a remediation verification letter
Attestation letter for customers, auditors, and compliance
Sample deliverable
What you'll see in your report
Every engagement ends with a clear, prioritized report: severity-rated findings with CVSS scores, affected assets, and remediation status - plus a free retest. The figures below are illustrative.
Findings by severity
25 total
Critical
1
High
8
Medium
10
Low
6
Critical · CVSS 9.8CX-408
Outdated service with known RCE (CVE)
CWE-1104mail.example.comFixed
High · CVSS 8.1CX-402
Internet-exposed RDP (tcp/3389)
CWE-284vpn.example.comOpen
Illustrative external network penetration test sample - anonymized to example.com.
High · CVSS 7.5CX-414
SMB exposed to the internet (tcp/445)
CWE-200198.51.100.20Open
Want the full anonymized sample report? We'll include it with your quote.
Cumulative figures across our team's combined engagement history
Shared under NDA · details anonymized
“CyberXplore found critical issues three previous vendors missed. The report was the clearest we've ever received - our engineers fixed everything in a week, and the free retest confirmed every fix held.”
23 critical findings surfaced
HS
Head of Security
European SaaS platform · Series C · 450 employees
B2B SaaS
Shared under NDA · details anonymized
“Senior testers, fast turnaround, and a free retest that actually proved our fixes worked. They made our SOC 2 audit painless.”
SOC 2 passed first attempt
VE
VP of Engineering
Series B FinTech · Payments platform
FinTech
Certifications held by our testers
OSCP
CRTP
CREST
CEH
eWPTX
ISO 27001
ISO 9001
Frequently asked questions
An external test attacks your internet-facing perimeter - the public IPs, ports, and services anyone on the internet can reach - to see how an outside attacker would gain a foothold. An internal test assumes that foothold and assesses what an attacker could do once inside your network.
