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BestPentestingUSA · by BugFoe
Infrastructure & Adversary Simulation

Internal & External Network Penetration Testing

External tests show whether attackers can get in. Internal tests show what happens once they do. We deliver both — remotely or on site.

Attack path focus LIVE

  • External perimeter & VPN testing
  • Active Directory attack paths
  • PCI DSS segmentation testing
  • Remote or on-site delivery

Overview

External testing shows what an attacker on the internet can reach; internal testing shows how far they could go after phishing one employee. PCI DSS requires both at least every 12 months, and the FTC Safeguards Rule expects annual testing unless you run effective continuous monitoring. Internal access runs over a secure VPN or a small test device we ship to you, so there are no travel costs.

Ransomware groups rarely need zero-days. They get in through an unpatched VPN appliance, an exposed remote desktop service or a phished laptop — and then move laterally through flat networks and over-privileged accounts until they reach domain admin and your backups.

Our external tests map and attack everything you expose to the internet. Our internal tests start from an assumed-breach position — a standard user on a corporate device — and show the path an attacker would take to your most critical systems.

Wireless networks and voice systems are tested as separate, specialist engagements — see our WiFi and VoIP penetration testing services.

How testing works for US organizations

  • Signed scope and written authorization before any testing, including hosting and cloud provider permissions
  • Testing windows agreed around your US time zone at scoping, including after-hours windows for production
  • Fully remote delivery, with internal and wireless access via VPN or a shipped test device, so no travel costs
  • Reports mapped to SOC 2, PCI DSS, HIPAA and customer questionnaires, with a fixed price in USD

What's included

External perimeterInternet-facing hosts, VPN and remote access, email gateways and exposed services.
Active DirectoryKerberos attacks, certificate services, delegation, ACL abuse and credential exposure.
SegmentationValidation that sensitive zones (e.g., cardholder data) are isolated as designed.
Internal servicesUnpatched servers, management interfaces, file shares and legacy protocols.
Firewalls & VPNFirewall rule exposure, VPN configuration and remote-access hardening.
Credential exposurePassword spraying, reused local admin passwords and cleartext credentials in shares.

Our approach

  1. DiscoveryAsset discovery and service enumeration across agreed IP ranges and domains.
  2. Vulnerability analysisCombining scanning with manual validation to remove false positives.
  3. Exploitation & escalationSafe exploitation and privilege escalation toward agreed objectives.
  4. Lateral movementDemonstrating realiztic paths to crown-jewel systems and data.
  5. Report & retestAttack narrative, prioritized fixes and verification of remediation.

What you receive

  • External exposure map
  • Internal attack path narrative
  • Segmentation test results (PCI DSS)
  • Active Directory hardening recommendations
  • Retest report and attestation letter

Standards & frameworks

  • PTES
  • NIST SP 800-115
  • PCI DSS 11.4
  • MITRE ATT&CK
  • CIS Controls

Frequently asked questions

Can internal testing be done remotely?

Yes. We provide a pre-configured virtual machine or small device that connects securely back to our testers, avoiding travel costs.

How often should network tests be performed?

At least annually and after significant infrastructure change. PCI DSS requires internal and external testing at least every 12 months and after significant changes.

Will you take down our network?

No. We avoid disruptive techniques unless explicitly agreed and coordinate testing windows for fragile systems.

Are you a PCI QSA or ASV, FedRAMP 3PAO or CMMC C3PAO?

No. We don't claim any of those statuses on this site. Most penetration tests for SOC 2, HIPAA, PCI DSS Requirement 11.4, the FTC Safeguards Rule and customer due diligence don't require them. If your contract, assessor or program requires a specific accredited provider, tell us at scoping and we'll say plainly whether we can meet it. See US compliance requirements.

Do you quote in US dollars?

Yes. US proposals are fixed-price and quoted in USD, with scope, effort, deliverables and payment terms set out in writing before work starts. See our US pricing guide for published market ranges.

Engagement timeline

What working with us looks like

Typical timeline for Internal & External Network Testing — we confirm exact dates in your proposal.

01Day 0ScopeCall, scope and fixed-price proposal
02Week 1Kick-offAccess, accounts and rules of engagement
03Week 1–2TestingManual testing with real-time critical alerts
04Week 2–3ReportExecutive + technical report and debrief
05+30 daysRetestFix verification and attestation letter
Sample report

Reports engineers can fix from and auditors accept

  • Executive summary in business language
  • Risk-rated findings with reproduction steps
  • Developer-ready remediation guidance
  • Retest results and attestation letter
Request a sample report

Ready to find your risks before attackers do?

Tell us what you need tested or monitored. A senior consultant replies within one business day with a scoped, fixed-price proposal.

  • Fixed-price proposal
  • Reply within 1 business day
  • NDA on request