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Invadel

Network

External Network
Penetration Testing

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What we look for

Network vulnerabilities we hunt for

Your perimeter is the first thing an attacker sees. We probe every internet-facing system for the exposed services and misconfigurations that hand an outsider their first foothold.

Exposed Services & Ports

Internet-facing services that should never be reachable from outside.

We test for

  • Service and port discovery
  • Management interface exposure
  • Legacy and forgotten hosts
  • Default and sample content

Vulnerable & Unpatched Systems

Missing patches on perimeter systems that attackers exploit first.

We test for

  • Known-CVE exploitation
  • Outdated software and appliances
  • Insecure protocols
  • Version and banner analysis

Perimeter Authentication

Weak access controls on VPNs, portals, and mail that open the door.

We test for

  • Password spraying
  • MFA gaps and bypass
  • VPN and portal weaknesses
  • Credential reuse

Misconfiguration & Information Leakage

Configuration errors that hand an outside attacker an easy foothold.

We test for

  • TLS and SSL misconfiguration
  • Verbose errors and metadata
  • DNS and subdomain exposure
  • Cloud and CDN misconfiguration

How it works

How your engagement runs

From scope through the final retest, your team stays in the loop at every step, with findings tracked live in our platform.

  1. 01

    Scope & kickoff

    Targets, roles, and rules of engagement defined in writing, with a fixed scope and timeline.

  2. 02

    Testing goes live

    Findings post to your live platform dashboard the moment our testers confirm them.

  3. 03

    Track remediation

    Follow every finding from open to fixed, with severity, evidence, and status in one place.

  4. 04

    Report & retest

    Executive and technical reports land, then request a free retest in one click.

Resources

Field notes from the offensive side

All articles →

AWS Penetration Testing: Scope, Rules, and What Gets Tested

How AWS penetration testing works: the shared responsibility model, what you may test without permission, IAM and S3 attack paths, and how to scope an engagement.

AWS Penetration Testing: Rules, Scope, and What to Test

How AWS penetration testing works: what Amazon allows without approval, what's off-limits, the misconfigurations that cause real cloud breaches, and how to scope a test.

Black Box vs White Box vs Grey Box Penetration Testing

What black box, white box, and grey box penetration testing each mean, what each finds and misses, what they cost, and how to choose the right method for your goal.

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FAQ

Frequently asked questions

What teams most often ask before scoping external network penetration testing.

Still have questions?
01What is the difference between external and internal network testing?

External testing assesses your internet-facing systems the way an outside attacker sees them, looking for the first foothold. Internal testing simulates an attacker who is already inside and tests how far they can spread. Many organizations run both for full coverage.

02What systems are in scope?

Typically your public IP ranges, VPNs, mail servers, exposed management interfaces, and other internet-facing infrastructure. We confirm the exact scope with you before testing begins.

03How long does an external network test take?

Most engagements run about one week depending on the size of your external footprint, followed by reporting and a complimentary retest.

04How often should external network penetration testing be done?

At least annually, and after any significant change to your perimeter: new public-facing applications, VPN or firewall changes, a cloud migration, or a merger. Many compliance frameworks (PCI DSS, SOC 2, ISO 27001) expect annual external network penetration testing at minimum, and quarterly external vulnerability scanning between tests keeps the window of exposure short.

05Is external network penetration testing different from vulnerability scanning?

Yes. A vulnerability scan is automated: it enumerates known weaknesses and produces a raw list. External network penetration testing is human-led: our testers validate which findings are actually exploitable, chain them the way a real attacker would, and prove impact, so you spend remediation time on the exposures that genuinely put you at risk rather than on scanner noise.

Ready to test your defenses?

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