Network Penetration Testing Services
A network can look secure from the inside while still giving attackers paths to break in, move between systems, and reach sensitive resources. We test your network from the outside in and the inside out, tracing how one foothold turns into access to the systems that matter most. Every engagement follows PTES and NIST SP 800-115, so you get structured, repeatable results your team and auditors can trust.
A Network Can Be Secure at the Perimeter and Still Expose the Inside
Firewalls and perimeter controls can reduce unwanted access, but they don't eliminate the risk created by exposed services, weak credentials, excessive privileges, outdated systems, or poorly separated network segments. Once an attacker gains an initial foothold, the security of the systems behind that perimeter becomes just as important.
A network penetration test evaluates how those weaknesses can be combined to move from one system or segment to another. Instead of simply listing vulnerable hosts, the assessment helps your team understand where access could lead, what critical resources may be reachable, and where network controls need stronger validation.
See How Your Network Holds Up Under Real Attack Conditions
Test Your External Exposure
Assess internet-facing hosts, services, remote access points, and network devices for weaknesses that could give an external attacker an initial foothold.
Validate Internal Segmentation
Test whether network boundaries actually restrict movement between user environments, servers, sensitive systems, and other internal segments.
Examine Access and Privilege Paths
Assess authentication, authorization, exposed services, and privilege relationships to determine whether compromised access could lead to broader network control.
Identify Paths to Critical Systems
Trace realistic routes toward high-value infrastructure and sensitive resources to determine whether an initial compromise could develop into a more serious network-level incident.
Measure the Security of Your Network Before You Test It
Know What an Attacker Could Reach From a Single Compromise
See which externally or internally accessible weaknesses could provide an attacker with a starting point inside your environment.
Understand whether network controls actually prevent movement between systems, segments, and environments that should remain separated.
Identify whether critical infrastructure can be reached through realistic attack paths and where additional security controls may be needed.
Don't Stop at Finding the Open Door
A network penetration test shows its real value when it reveals what an attacker could do after gaining access. We follow realistic attack paths to find out whether one compromised system leads to more systems, higher privileges, or your most sensitive infrastructure.
In one recent engagement, our testers turned a single help desk login into Domain Admin access in four steps. Your team sees exactly how individual weaknesses connect, where your network controls hold strong, and where they need strengthening.
What We Hear Most about Network Testing
How long does a network penetration testing engagement take?
Most engagements take two to four weeks, depending on the number of hosts, network segments, locations, access conditions, and testing objectives. We set the final timeline during scoping, so your team knows what to expect before testing begins.
Can you test both external and internal networks?
Yes, we test external networks, internal networks, or both in a single engagement, based on what your organization needs to validate. External testing shows how an attacker could break in from the internet. Internal testing shows how far they could go once inside. Together, they give you the full picture of your network's risk.
Will network penetration testing affect production systems?
Testing runs around your operational needs. Before we begin, we agree on rules of engagement, testing windows, and any high-impact techniques to run in a controlled way, so your systems stay up while we test.
Can you test network segmentation?
Yes. Testing evaluates whether security boundaries effectively restrict access between different network segments and whether an attacker with an initial foothold could move beyond the area they first compromise.
What types of network infrastructure can be test?
We test servers, network devices, externally exposed services, remote access infrastructure, internal systems, and the other components that make up your network, based on your scope.
Can you simulate an attacker who already has internal access?
Yes. Internal testing can be structured around different starting positions to help determine what an attacker could accomplish after gaining access to the network.
How is network penetration testing different from vulnerability scanning?
Vulnerability scanning primarily identifies known weaknesses. Penetration testing manually investigates whether those weaknesses can be exploited and how they could be combined to create meaningful attack paths.
Can network penetration testing identify lateral movement risks?
Yes. Testing examines whether an attacker who compromises one system could use available access, credentials, services, or network relationships to reach additional systems.
Can you include remote access infrastructure?
Yes, we test VPNs, remote access services, and other externally reachable entry points as part of your agreed scope. Remote access is one of the most common ways attackers get in, so we often recommend including it.
What happens when a serious vulnerability is discovered?
We alert your team right away through the escalation path we agree on during scoping. You can start fixing serious risks while testing continues, well before the final report arrives.
What does the final network penetration testing report include?
You'll receive three reports built for different audiences. The Risk Impact Brief shows leadership how far an attacker could get into your network and what that means for the business. The Technical Pentest Report gives your security team validated findings, mapped attack paths, supporting evidence, risk prioritization, and step-by-step remediation guidance. The Attestation Letter gives auditors and customers proof of testing.
Should network penetration testing be repeated after remediation?
Yes, retesting confirms your fixes work, and we include one retest of Critical and High findings at no additional cost. Once your team remediates, our testers verify that each vulnerability is closed and that your remediation changes keep the rest of your network secure.
Does network penetration testing support PCI DSS compliance?
Yes, our network testing maps directly to PCI DSS v4.0.1 Requirement 11.4. PCI DSS requires external and internal network penetration testing at least once every 12 months and after any significant change to your environment. If you use segmentation to reduce the scope of your cardholder data environment, Requirement 11.4.5 adds segmentation testing at least once every 12 months and after any change to your segmentation controls. Service providers must test segmentation every six months under Requirement 11.4.6. Our testing actively attempts to bypass your segmentation controls, which is the proof PCI DSS assessors expect.