External-Facing Infrastructure
Public IP ranges, DNS servers, mail relays, web servers, load balancers, and any service reachable from the internet without VPN or internal credentials.
Network Security Testing Services
Map your exposure. Exploit the path. Close the gaps.
External and internal network penetration testing, Active Directory exploitation, lateral movement analysis, and firewall rule review. Every finding is manually validated, scored against CVSS 4.0, and mapped to a real attack path so your security team knows exactly what to fix first.
- 0h
- Avg. critical-finding alert
- 0+
- Ports scanned per host
- 0%
- Tests achieve Domain Admin
- 1
- Free retest included
network-topology-scan.sh
Live Scan
HOSTS: 24 scanned
PORTS: 65,535/host
EXPOSED: 47 services
CRITICAL: 4 findings
HIGH: 8 findings
Scan complete
Aligned to the standards your auditors expect
PTES
NIST SP 800-115
CIS Controls
MITRE ATT&CK
CVSS 4.0
// What's Included
What's Included in Our Network Security Testing Services
Our network security testing services cover every layer of your infrastructure, from internet-facing perimeter hosts to internal Active Directory domains. Each engagement combines automated scanning with manual exploitation and post-exploitation techniques to identify weaknesses that scanners alone cannot chain together.
// Scope
What Our Network Security Testing Services Cover
Our network security testing services can scope a single subnet or your entire enterprise infrastructure. Most clients start with the segments that hold sensitive data or face the internet, then expand coverage over time.
Internal Corporate Networks
Workstation subnets, server VLANs, management networks, printers, NAS devices, and internal services accessible after gaining an initial foothold or insider position.
Active Directory & Identity
Domain controllers, LDAP, Kerberos, Group Policy, certificate services (AD CS), trust relationships, privileged accounts and service principal names across single or multi-forest environments.
Wireless Networks
WPA2/WPA3 configuration, rogue access point detection, wireless client isolation, SSID enumeration, and assessment of wireless-to-wired network bridging risks.
VPN & Remote Access
VPN concentrator configuration, split-tunnelling risks, authentication mechanism strength, certificate validation, and assessment of what remote users can reach once connected.
OT/ICS Networks
Where applicable: passive reconnaissance and configuration review of SCADA, PLCs and industrial protocols (Modbus, DNP3, OPC UA), with active testing only when explicitly authorised by the asset owner.
// Attack Paths
How Attackers Move Through Your Network — and How We Test It
Network compromise is rarely a single exploit. Attackers chain together reconnaissance, initial access, privilege escalation, and lateral movement to reach their objective. Our network security testing services replicate each stage of this kill chain to find the paths before a real adversary does.
Stage 01 / 06
External Perimeter Breach
External Perimeter Breach
The first objective is gaining a foothold from the outside. We map your entire internet-facing attack surface — public IPs, DNS records, exposed services, SSL/TLS configurations, and externally reachable management interfaces. Port scanning across the full TCP and UDP range identifies services that should not be publicly accessible: forgotten development instances, database ports, RDP endpoints, and administrative consoles left open after a cloud migration or infrastructure change.
How we test it
Full-range Nmap and Masscan sweeps, banner grabbing, service fingerprinting, SSL/TLS analysis, and targeted exploitation of identified vulnerabilities on perimeter hosts. We validate every finding manually before reporting it.
Service Exploitation & Initial Access
Once exposed services are identified, we attempt exploitation of known vulnerabilities (CVEs in unpatched services), default or weak credentials on network devices, SNMP community strings, and misconfigured services like FTP, SMB, or IPMI. The goal is to convert a network-level finding into an actual shell or authenticated session that demonstrates real access, not just a theoretical vulnerability.
How we test it
Targeted exploitation using Metasploit, manual exploit scripts, credential spraying against identified services, SNMP enumeration, and default credential testing against routers, switches, firewalls, and out-of-band management interfaces (iLO, iDRAC, IPMI).
Active Directory Privilege Escalation
Active Directory is the backbone of most enterprise networks, and the most common path to full domain compromise. We enumerate SPNs for Kerberoasting, identify accounts without pre-authentication for AS-REP roasting, map ACL misconfigurations that allow low-privilege users to modify privileged groups, and test for unconstrained delegation, certificate template abuse (ESC1-ESC8), and GPO permission weaknesses that lead to Domain Admin.
How we test it
BloodHound path analysis, Rubeus for Kerberos attacks, Certify for AD CS abuse, PowerView for ACL enumeration, and manual exploitation of identified privilege escalation paths through the domain trust hierarchy.
Lateral Movement & Pivoting
With initial access established, we test how far an attacker can move through the network. This means pivoting between subnets, exploiting trust relationships between systems, testing whether network segmentation actually blocks cross-VLAN traffic, and identifying hosts where credentials or sessions can be reused. Flat networks with no segmentation typically allow an attacker to reach every system from any initial foothold.
How we test it
SMB relay attacks, WMI and PSExec execution across hosts, SSH key reuse, RDP session hijacking, VLAN hop testing, and systematic verification of firewall rules between each trust zone in the network architecture.
Credential Harvesting & Pass-the-Hash
Credentials are the most reused asset in enterprise networks. We extract NTLM hashes from compromised hosts, test for pass-the-hash and pass-the-ticket attacks, enumerate credentials stored in Group Policy Preferences, LSASS memory, registry hives, and configuration files. Service accounts with weak passwords set years ago and never rotated are consistently the most reliable path to privilege escalation in real engagements.
How we test it
Mimikatz for credential extraction, Hashcat for offline cracking of Kerberos and NTLM hashes, Impacket for relay attacks, and systematic enumeration of stored credentials in GPP, SYSVOL, and local credential stores.
Data Exfiltration & Impact
The final stage demonstrates real business impact. We test whether sensitive data (database exports, file shares containing PII, source code repositories, backup files) can be accessed and exfiltrated through the network without triggering detection. This includes testing egress filtering controls, DNS tunnelling, HTTP/S exfiltration channels, and whether DLP controls actually detect outbound data movement from compromised hosts.
How we test it
Controlled data exfiltration attempts over DNS, HTTPS and ICMP channels, egress port testing, file share enumeration, database access validation, and assessment of whether SIEM and DLP controls detect the activity.
0+
Avg. findings per network test
0%
Of tests achieve Domain Admin
0h
Avg. critical-finding notification
0%
Findings retested at no cost
// Methodology
How Our Network Security Testing Services Process Works
A typical network security test runs two to four weeks depending on the number of subnets, hosts and domains in scope. Every engagement follows the same five-step process aligned to PTES and NIST SP 800-115.
network-pentest-engagement.sh
#!/bin/bash — network-pentest-engagement
$ scope --external --internal --ad
→ 24 hosts in scope. 3 subnets. AD domain mapped.
✓ Scoping complete — Week 1
$ recon --nmap --enum --service-fingerprint
→ 65,535 ports/host. 47 services identified.
✓ Reconnaissance delivered — Week 1–2
$ exploit --kerberoast --relay --pivot
→ Domain Admin achieved. 3 lateral paths confirmed.
✓ Exploitation complete — Week 2–3
$ post-exploit --dump --exfil-test --persist
→ Hash extraction. Data exfil path validated.
✓ Post-exploitation documented — Week 3
$ report --cvss4 --attack-paths --retest
→ 12 findings. Attack path diagrams included.
✓ Report delivered + retest — Week 4
$
01
Scoping & Rules of Engagement
Define target IP ranges, subnets, Active Directory domains, testing windows, excluded hosts (production OT systems, critical databases), rules of engagement, communication channels for critical findings, and success criteria with your network and security operations teams.
IP Range Definition
AD Domain Mapping
RoE Sign-off
Week 1 · Output: Scope document + RoE
02
Reconnaissance & Service Enumeration
Full TCP/UDP port scanning across 65,535 ports per host, service fingerprinting, OSINT gathering, DNS enumeration, SNMP walks, Active Directory enumeration (users, groups, SPNs, trusts), and network topology mapping to build a complete picture of every reachable host and service.
Nmap
Masscan
BloodHound
SNMP Enum
Week 1–2 · Output: Asset inventory + topology map
03
Vulnerability Analysis & Exploitation
Automated vulnerability scanning combined with manual exploitation: Kerberoasting, AS-REP roasting, SMB relay attacks, default credential testing on network devices, service-specific CVE exploitation, and delegation abuse. Every finding is validated manually before inclusion in the report.
Rubeus
Impacket
Metasploit
Certify
Week 2–3 · Output: Validated exploit chains
04
Post-Exploitation & Lateral Movement
From each compromised host, we pivot through the network to test segmentation controls, harvest credentials from LSASS and registry hives, escalate through Active Directory, test data exfiltration paths over DNS/HTTPS/ICMP, and demonstrate the full impact chain from initial access to domain compromise.
Mimikatz
PSExec
Hashcat
VLAN Hop
Week 3 · Output: Attack path documentation
05
Reporting, Walkthrough & Retest
A prioritized report with CVSS 4.0 scores, MITRE ATT&CK technique mapping, attack path diagrams, proof-of-concept evidence and fix guidance, walked through live with your team. Once fixes are applied, we retest every finding at no extra cost and issue a signed closure report for your auditors.
CVSS 4.0
MITRE ATT&CK
Free Retest
Week 4 · Output: Full report + closure cert
// Deliverables
What You Receive From Our Network Security Testing Services
Every network security testing engagement ends with documentation built for three audiences: engineers fixing infrastructure issues, leadership prioritizing remediation budget, and auditors verifying due diligence.
01
Executive Summary
A non-technical overview of overall network security posture, risk ratings by network zone, and business impact of critical findings for leadership and board-level reporting.
02
Technical Findings Report
Every vulnerability listed with CVSS 4.0 score, MITRE ATT&CK technique ID, proof-of-concept evidence, affected hosts, and step-by-step reproduction instructions.
03
Attack Path Diagrams
Visual maps showing how individual findings chain together into full compromise paths, from initial access through lateral movement to domain admin or sensitive data access.
04
Remediation Guidance
Specific, actionable fix instructions for each finding: firewall rule changes, GPO hardening steps, AD configuration fixes, patching priorities, and segmentation recommendations.
05
Free Retest & Closure Report
Once findings are remediated, we retest every issue at no extra cost and issue a signed closure report confirming fixes for auditors, regulators, and enterprise customers.
Five deliverables. One engagement. Full visibility into your network security posture.
See a sample report// Why CipherTrivia
Why Choose CipherTrivia for Network Security Testing Services
A few things set our network security testing services apart from a typical vulnerability scan with a PDF attached.
Manual Exploitation, Not Scanner Output
Every finding is manually validated and exploited by an experienced tester. If it is in the report, we have demonstrated that it is exploitable in your environment, not just flagged by an automated tool.
Full Kill-Chain Testing
We do not stop at identifying open ports. We chain findings together through reconnaissance, initial access, privilege escalation, lateral movement and data exfiltration to show the full business impact of each weakness.
Active Directory Depth
AD is where most internal network tests succeed or fail. We run BloodHound analysis, Kerberos attacks, delegation abuse, and certificate services exploitation as standard, not as an optional add-on.
Compliance-Ready Reports
Reports map directly to ISO 27001, SOC 2, PCI DSS and NIST CSF control families. The closure report after retest is the document most auditors and enterprise customers ask for by name.
// Proof of Work
A Network Security Testing Case Study
Network Testing · Banking & Fintech
Closing Critical Gaps in a Banking API Gateway
A regional bank needed a full penetration test of its customer-facing API gateway and internal network infrastructure ahead of a regulatory audit. We identified 9 exploitable issues, including a critical path to domain admin through Kerberoasting, and retested every fix before a 3-week compliance deadline.
Read case study// FAQ
Frequently Asked Questions About Network Security Testing
What is the difference between external and internal network penetration testing?
External testing targets your internet-facing perimeter — public IPs, DNS, firewalls, VPN gateways, and exposed services — simulating an attacker with no internal access. Internal testing starts from inside the corporate network (or a VPN-connected position) and evaluates what an attacker who has bypassed perimeter controls, or a malicious insider, can reach. Both are required for a complete picture because external hardening alone does not prevent lateral movement once an attacker gains initial access through phishing, supply-chain compromise, or a compromised endpoint.
Will network penetration testing disrupt production systems?
We agree on rules of engagement, testing windows, and excluded actions before testing begins. Exploitation is controlled and non-destructive — we avoid denial-of-service conditions, do not modify production data, and coordinate timing with your operations team. In critical environments such as OT/ICS networks, we limit testing to passive reconnaissance and configuration review unless active testing is explicitly authorised by the asset owner.
How long does a network security test take?
A focused external perimeter test typically completes in one to two weeks. A combined external and internal assessment with Active Directory testing runs two to four weeks depending on the number of subnets, hosts, and domains in scope. Timelines are agreed during the scoping phase so your team can plan maintenance windows and access provisioning accordingly.
Do you test Active Directory environments specifically?
Yes. Active Directory assessment is a core component of our internal network testing, not an optional add-on. We test for Kerberoasting, AS-REP roasting, unconstrained and constrained delegation abuse, ACL misconfigurations (WriteDACL, GenericAll, GenericWrite), Group Policy weaknesses, AD Certificate Services template abuse (ESC1 through ESC8), password policy enforcement, privileged group membership, and trust relationship exploitation across forests and domains.
What standards and frameworks does your network testing follow?
Our testing methodology aligns to PTES (Penetration Testing Execution Standard), NIST SP 800-115 (Technical Guide to Information Security Testing and Assessment), CIS Controls for network hardening benchmarks, and the MITRE ATT&CK framework for mapping techniques to real-world adversary behaviour. Findings are scored using CVSS 4.0 and mapped to the relevant control families for ISO 27001, SOC 2, PCI DSS, and NIST CSF compliance evidence.
Get Started With Network Security Testing
Tell us about your network environment — IP ranges, Active Directory domains, compliance requirements — and we will scope a network security testing engagement that fits your timeline and budget.