External network penetration testing

See your network the way attackers do

Your public-facing assets are the gateway to your organization’s digital presence. Rhymetec’s External Network Penetration Testing provides a precise, controlled assessment of your external perimeter to identify misconfigurations, vulnerabilities, and potential exposure points. Our certified testers emulate realistic attack scenarios in a safe, managed way, delivering verified findings and clear recommendations to help you maintain a resilient, trusted network environment.

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Clarity across your external perimeter

We assess your internet-facing assets to ensure your business remains secure and connected with confidence.

External penetration testing focuses exclusively on systems, applications, and infrastructure exposed to the public internet. Rhymetec’s testers replicate real-world reconnaissance and exploitation techniques to identify risks such as outdated software, weak encryption, open ports, and exposed credentials. Rather than focusing on alarm, our approach provides clear visibility into your external environment.

A structured approach to external assurance

Our proven process ensures accuracy, transparency, and actionable outcomes.

Planning & Scoping

Define the testing scope (domains, IPs, and assets) aligned with your business and compliance priorities.

Reconnaissance & Discovery

Identify every publicly accessible service and dependency exposed to the internet.

Validation & Analysis

Safely validate potential vulnerabilities to measure true impact without disruption.

Reporting & Remediation Guidance

Deliver a clear, comprehensive report with prioritized recommendations and executive insights.

From discovery to direction

Every engagement concludes with transparent, validated results.

  • Verified vulnerabilities with risk rankings and supporting evidence
  • Executive summary for leadership visibility
  • Technical findings with detailed remediation guidance
  • Optional retesting to validate corrective actions

Certifications our testers hold

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

Have a question?

We can help.

What is External Network Penetration Testing?

External network penetration testing evaluates the security of your public-facing systems (such as web servers, email gateways, and cloud endpoints) by simulating real-world attacks to identify and validate vulnerabilities.

How often should external penetration testing be performed?

At least annually, or following significant infrastructure or application changes. Many organizations also test quarterly to meet compliance frameworks such as SOC 2, ISO 27001, or PCI DSS.

Who needs an External Network Penetration Test?

Any network connected to the internet should test its network security through vulnerability scanning and network penetration testing.

How long does an External Network Penetration Test take?

Almost all of our Penetration Tests take approximately one week for initial testing. Upon notification of critical findings coupled with an executive presentation of initial findings, plus details for remediation, our team will execute a retest at no additional cost to you.

Security with benefits

What our clients are saying about us

Rhymetec helped us to become ISO 27001 and SOC 2 Type 2 compliant in 1/3 the time we were expecting. As an early stage B2B startup, this allowed us to go afer enterprise customers months ahead of schedule and got us to become more competitive vs the established players.

Agentnoon

CTO & Cofounder

We went from zero to ISO 27001 and SOC 2, Type 2, in a much shorter time than anyone else was telling us. Rhymetec worked with me to get our organization the security certifications it needed and I will always be grateful for their professionalism and support because their help solved a very real business problem for us.

Tenjin

VP

Working with Rhymetec’s team is great. We use their vCISO program and work closely with a Cloud Compliance Analyst. The Rhymetec team is knowledgeable, responsive and flexible. It is like having an additional team member to handle security and technical issues.

ThinkIQ, Inc.

Director of Operations

Rhymetec did an amazing job and we sailed through our ISO 27001 audit and SOC2 audit. Our vCISO has been great to work with.

ContractSafe

President

We engaged with Rhymetec to complete our first ISO 27001 internal audit. They executed a very efficient engagement and helped us through the process. They produced quality deliverables within the timelines promised.

mTuitive Inc.

CISO

For any companies going through the SOC 2 compliance process, Rhymetec should be a required resource. They combine expert knowledge with a low-effort service model that doesn’t tie up our team’s capacity. I’d recommend Rhymetec to anyone.

Cartful

CEO

Rhymetec has been an absolute lifesaver. Not only is our vCISO super knowledgeable about all things SOC2, but was an absolute delight to work with. There is no way we would have reached this point without our vCISO and Rhymetec’s help.

D3Clarity, Inc.

Operations Associate

The testing was very thorough and complete. Communication and feedback afterwards was easy to understand and very fast. We were able to quickly identify and fix all the issues that were brought up and the team was able to verify the fixes without issue.

Graphium Health

Senior Application Architect

I appreciated how easy it was to schedule the internal audit, and how my Rhymetec compliance analyst helped me understand what I needed to do to prepare for both their internal audit and also our subsequent external audits.

Duolingo

Senior Security Risk Program Manager

Rhymetec was very professional and helpful. They made it easy to schedule the ISO Internal Audit, the response was clear and helpful. I’ll definitely be working with them again in the future.

PlaybookUX

CEO

The team at Rhymetec was incredibly easy to work with from start to finish. They were able to accommodate our extended Penetration Testing schedule for remediation and retesting. And the ability to communicate directly with the testers via Slack was a time saver and enormously helpful.

Fond Technologies, Inc.

Principal Software Architect

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