Use Case in Software Testing: How to Turn One Into Test Cases
Every path through a use case becomes at least one test case. A worked bank-transfer example shows the test table, and ISTQB's 2023 and 2025 syllabus changes explain…
Network Security Testing
and Segmentation Review
Strengthen your business with comprehensive network security testing and vulnerability assessments. Vervali tests your firewalls, segmentation, exposed services and access rules for gaps an attacker could exploit, inside written rules of engagement. You get a risk-ranked report with a clear path to fix, and a retest once the fixes are in.
150+ clients
450+ projects
275+ engineers
15+ years
ISO/IEC 17025:2017Accredited testing laboratory
CMMI Maturity Level 3The process is written down and repeats
ISO 9001:2015Quality management
ISO/IEC 27001Information security
Firewalls, Segmentation, Exposure and Access Rules
We test whether your network holds when someone actually tries the door, then retest after the fix.
Network Penetration Testing
Real-world attacks against the agreed in-scope network to find and exploit weaknesses, inside written limits.
Segmentation Review
We confirm that sensitive zones are truly separated, so one compromised host cannot reach the rest.
Firewall and Intrusion Detection Testing
Rules and detection tested so unauthorised access is blocked and security events are caught early.
Wi-Fi Security Testing
Wireless networks checked so guest access stays guest-only. Deeper passes run through wireless security testing.
A segment that only exists on the diagram is not a control.
Free Exposure CheckNetwork Testing or Penetration Testing
Network testing is the firewall and segmentation layer of the security offer. Pick the scope that matches the problem.
Choose Network Testing When
The problem is segmentation that does not hold, firewall rules that drifted, wireless that was meant to be guest-only and services that answer on the internet. For servers, hosts and cloud IAM, pair it with infrastructure security testing.
Choose Penetration Testing When
You need an authorised attacker across the application, API, mobile and infrastructure. That is our penetration testing engagement, part of the wider security testing offer. We do not bill both for the same week unless you asked for both.
What a Network Test Finds
The gaps that build up quietly between audits.
Temporary Rules Made Permanent
Firewall exceptions opened for a project and never closed, still letting traffic through years later.
Admin Paths on the Internet
Management consoles, remote access and admin ports reachable from outside when they should not be.
Flat Networks Behind the Firewall
Internal zones with no real separation, so one compromised laptop can reach production systems.
Guest Access That Reaches Production
Guest or partner networks that can see internal services, often through a forgotten route.
The Report and the Retest
Findings your team can act on, and proof that the fixes worked.
Risk-Ranked Findings
Every finding is manually verified, ranked by risk and shown with the path an attacker would take to cause harm, so your team fixes the right things first.
Clear Fix Guidance
Each finding comes with practical remediation steps for your network and security teams, written for the devices and rules you actually run.
Retest After Fixes
Once fixes are in, we retest the affected assets and update the report, so you have evidence the gap is closed. The retest is part of the original scope.
Case Studies
Security engagements where risk-ranked findings and retests turned scanner noise into closed gaps.
Bank · VAPT and audit evidence
Before: vulnerability noise was burying the work that mattered, fixes took over 40 days and audit preparation took five days. After: 68% less vulnerability noise, time to fix under 16 days, audit preparation down from 5 days to 5 hours, and high-risk findings closed 3.5 times faster.
68% less vulnerability noiseTime to fix under 16 daysAudit prep 5 days to 5 hours3.5x high-risk closurePayments Platform
Infrastructure VAPT across the exposed surface of a digital recharge and payments platform, with findings retested after remediation.
Marine Technology
Web and infrastructure testing against the agreed in-scope assets of a global marine technology organisation.
Fintech Platform
API and network exposure testing on a fintech platform, with risk-ranked findings for the engineering team.
SaaS Gaming
End-to-end security testing across the agreed in-scope product of a SaaS gaming platform, with a retest after fixes.
How a Network Test Starts
From written permission to a closed retest, 9am to 1pm Eastern with delivery from India.
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01
Agree the Scope
We list the in-scope segments, firewalls and services, and sign written rules of engagement.
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02
Free Exposure Check
We look at one domain from the outside and show what an attacker would see first.
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03
Test the Network
Manual testing with controlled exploitation, inside the agreed limits and timing windows.
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04
Report and Retest
You get a risk-ranked report, fix the gaps, and we retest to confirm they are closed.
Frequently Asked Questions
Cost follows the agreed scope: how many network segments, firewalls, exposed services and access rules are included, whether controlled exploitation is in, and the retest after fixes. We write that list down first, then quote against it. A free exposure check of one domain shows what an attacker sees from outside and helps size the work before you commit.
The main types are application, API, mobile, network, infrastructure, wireless and full penetration testing. Network security testing focuses on firewalls, segmentation, exposed services and access rules. Infrastructure testing covers hosts and cloud configuration, and penetration testing combines layers into one authorised attack. We help you pick the layer that matches the risk you actually have.
Unauthorised testing is illegal. Authorised testing of agreed in-scope assets, with written permission from the owner, is a normal security engagement. Before anyone touches a host, we sign rules of engagement that name the targets, the methods and the timing windows. We never test systems you did not list, and every step stays inside those written limits.
Commonly used tools include Nmap for discovery, Nessus or OpenVAS for vulnerability scanning, Burp Suite for web traffic, Metasploit for controlled exploitation and Wireshark for packet analysis. Tools only find candidates, though. Our testers manually verify every finding, rank it by real risk and retest after fixes, so your report holds confirmed gaps rather than scanner noise.
A penetration test is priced on scope: the applications, APIs, mobile apps and network assets included, how deep exploitation goes, and the retest. A focused network test usually costs less than a full multi-layer engagement. We quote after the in-scope list is agreed, and a free exposure check of one domain is a no-cost way to start.
Judge a vendor on written permission, a clear in-scope list, manual verification of findings and a retest after fixes, rather than on a ranking. Vervali works under ISO/IEC 27001 with 275+ engineers, 9am to 1pm Eastern with delivery from India. Clutch is where buyers compare ratings, and a free exposure check shows how we work first.
No. AI can widen a scan and speed up triage, but a person still has to confirm a finding is real, stay inside the agreed scope and judge the path to harm. That human judgement is what turns a scanner output into a report your team can act on. We use AI where it saves time, and testers own every finding and retest.
Web application penetration testing is an authorised attack on a web app to find exploitable flaws such as broken authentication, injection and access control gaps, followed by a retest after fixes. It differs from network testing, which targets firewalls, segmentation and exposed services. Many teams run both, and our penetration testing engagement covers the application layer in depth.
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