NGFW, Firewall, IDS, and IPS Effectiveness Testing
Validate whether network controls block, alert on, or miss realistic malicious traffic — covering exploit-like behaviors, suspicious connections, and policy enforcement.
Network Infiltration & Malware Validation (NIMV)
Network Infiltration & Malware Validation
That Proves Your Network Defenses Work.
Continuously validate your firewalls, NGFW, IDS, IPS, DNS security, proxies, segmentation, and SIEM visibility against realistic malware traffic, C2 communication, lateral movement, DNS tunneling, and controlled exfiltration scenarios. Valitrix NIMV helps security teams identify network detection gaps, verify policy enforcement, expose segmentation weaknesses, and prioritise remediation with evidence.
- Validate malware traffic, C2 beaconing, DNS tunneling, and lateral movement detection.
- Measure blocked, detected, logged-only, and missed network activity across north-south and east-west paths.
- Turn network control gaps into prioritised firewall rules, segmentation changes, and SIEM detection improvements.
What Is Network Infiltration & Malware Validation?
A clear definition security teams can act on.
Network Infiltration & Malware Validation is…
The continuous process of testing network security controls against realistic attacker traffic to verify whether malicious activity is blocked, detected, logged, segmented, and escalated correctly.
Valitrix NIMV validates network defences by safely simulating attacker behaviours such as malware delivery traffic, command-and-control communication, DNS tunneling, lateral movement attempts, exploit traffic, suspicious outbound connections, payload staging, and controlled data exfiltration. The result is evidence-based visibility into what your network security stack blocks, what it detects, what bypasses controls, and what requires remediation.
Unlike a one-time penetration test, NIMV runs continuously — validating firewall policy enforcement, segmentation integrity, SIEM telemetry quality, and detection coverage on an ongoing basis. Every result is mapped to a MITRE ATT&CK technique, giving security teams a shared language for gaps and remediation priority.
Valitrix NIMV helps by…
Running controlled, MITRE ATT&CK-mapped network simulations from approved test hosts and measuring whether each malicious traffic pattern was blocked, detected, allowed, or missed — then surfacing actionable remediation for every gap.
Security teams use NIMV to…
Continuously prove the real effectiveness of network controls — NGFW, IDS, IPS, DNS security, segmentation, proxies, and SIEM alerting — and to validate improvements after firewall changes, policy updates, or architecture modifications.
The main outputs are…
A per-scenario detection and prevention scorecard, MITRE ATT&CK coverage heatmap, segmentation gap findings, C2 and DNS tunneling detection assessment, SIEM telemetry quality report, and executive-ready network risk reporting.
Why Network Security Validation Matters
Network controls configured is not the same as network controls protecting you.
Network controls degrade silently. Policy exceptions, temporary firewall rules, misconfigured allowlists, shadow IT, encrypted traffic growth, and architecture changes routinely create gaps that go undetected until an attacker exploits them.
Policy drift opens undetected paths
Firewall rule exceptions, temporary allow rules, and misconfigured allowlists accumulate over time — creating attacker-exploitable paths without visible alerts.
Attackers use network paths at every stage
From malware staging to C2 communication, lateral movement, and exfiltration — network paths are used throughout the attack lifecycle, not just at initial access.
Encrypted traffic hides malicious activity
C2 beaconing, DNS tunneling, and data staging increasingly use encrypted channels and legitimate protocols designed to evade signature-based inspection.
SIEM blindness hides network breaches
If network events do not reach the SIEM or NDR with sufficient context, the SOC cannot detect, correlate, or respond to network-based threats before they cause damage.
Key CapabilitiesValidate NGFW, IDS, IPS, DNS Security, Proxies,
Validate NGFW, IDS, IPS, DNS Security, Proxies,
and SIEM Visibility.
Network Infiltration & Malware Validation (NIMV) covers the full breadth of real-world network attack techniques — from malware delivery traffic and C2 beaconing through to lateral movement, segmentation bypass, and controlled exfiltration.
Malware Traffic and Payload Staging Validation
Simulate controlled malware-like network behaviors to test content inspection, policy enforcement, and SOC/NDR visibility across ingress and egress paths.
Command-and-Control Communication Testing
Validate whether HTTP/S beaconing, suspicious outbound traffic, C2 callback patterns, and covert communication are detected or blocked by network and SIEM controls.
DNS Tunneling and DNS Security Validation
Test whether DNS-based suspicious behavior, tunneling patterns, and unusual query volumes are identified by DNS security controls and escalated correctly.
Network Segmentation and East-West Movement Testing
Assess whether internal segmentation, VLAN policies, and zone-based firewall rules prevent unauthorized lateral movement between users, servers, and sensitive zones.
Lateral Movement and SMB Abuse Validation
Validate whether internal traffic patterns associated with lateral movement, SMB abuse, remote service usage, and network discovery are detected or contained.
Egress Filtering and Controlled Exfiltration Testing
Measure whether outbound traffic controls prevent unauthorized data movement through HTTP/S, DNS, FTP, cloud destinations, and encrypted channels.
SIEM, NDR, and SOC Visibility Validation
Confirm whether network telemetry reaches the SIEM or NDR platform, triggers correlation rules, generates useful alerts, and provides sufficient investigation context.
Remediation and Policy Tuning Guidance
Convert missed detections and allowed malicious paths into firewall rules, segmentation changes, DNS policies, proxy tuning, and SIEM detection engineering actions.
Executive and Technical Reporting
Provide network risk scores, MITRE ATT&CK coverage, blocked/detected/missed results, segmentation findings, remediation progress, and retest evidence for leadership and technical teams.
How Valitrix NIMV Works
From selected scenario to remediated gap — in five steps.
01
Select network infiltration, malware, C2, or segmentation scenarios
Choose from a library of MITRE ATT&CK-mapped network attack scenarios or run a full kill-chain campaign across approved test hosts and scoped network zones.
02
Run controlled simulations from approved test infrastructure
Valitrix NIMV generates safe simulation traffic from approved hosts or network zones — covering ingress, egress, north-south, and east-west paths — without using real malware or causing real data movement.
03
Capture blocked, allowed, detected, logged, and missed outcomes
Each simulation records whether the traffic was blocked, detected, logged only, or missed — and whether a SIEM or NDR alert was generated with sufficient investigation context.
04
Map results to MITRE ATT&CK, network controls, and risk categories
Results are tagged by ATT&CK tactic, technique ID, control type, and risk severity — giving you a gap map and network defense coverage heatmap your team can act on.
05
Prioritise remediation and retest until network defenses improve
NIMV surfaces actionable guidance for each gap: firewall rules, segmentation changes, DNS policies, IPS tuning, proxy settings. Retest after changes to confirm improvement.
Simulate Malware Traffic, C2 Channels, and Lateral Movement Safely
Eight network attack scenarios. Real control responses.
NIMV does not only show whether traffic was sent. It shows whether your network controls blocked it, detected it, logged it, correlated it with SIEM or NDR telemetry, and provided enough evidence for investigation.
Detected
Malware Delivery Traffic
Control: NGFW, IPS, proxy, malware inspection
Expected: Block, alert, or quarantine traffic
Remediation: Enable deep packet inspection and verify IPS signature coverage for the detected traffic category.
Allowed
Command-and-Control Beaconing
Control: Firewall, proxy, NDR, SIEM correlation
Expected: Block outbound callback or generate high-confidence alert
Remediation: Create egress firewall rules for C2 destination categories; enable proxy-based behavioral analytics.
Not Detected
DNS Tunneling Simulation
Control: DNS security, resolver logging, anomaly detection
Expected: Detect, block, or escalate suspicious DNS patterns
Remediation: Enable DNS query anomaly detection and configure SIEM rules for unusual query length and frequency.
Allowed
Lateral Movement Simulation
Control: Segmentation, IDS/IPS, internal firewalling
Expected: Prevent unauthorized east-west movement or generate alert
Remediation: Review VLAN and zone policy rules; enforce deny-by-default between untrusted and sensitive segments.
Blocked
Exploit Traffic Replay
Control: IDS/IPS signatures, NGFW inspection
Expected: Detect or block exploit-like traffic
Remediation: Confirm IPS signature set is current; validate virtual patching rules for legacy asset protection.
Detected
Suspicious Outbound Transfer
Control: Egress filtering, proxy, firewall rules
Expected: Block, alert, or require approved destination policy
Remediation: Validate outbound destination allow-list policy and confirm DLP-adjacent controls are logging correctly.
Not Detected
Encrypted Channel Abuse
Control: TLS inspection policy, proxy logging, destination reputation
Expected: Identify suspicious encrypted outbound behavior
Remediation: Review TLS inspection policy coverage; enable destination reputation scoring for encrypted outbound connections.
Blocked
Segmentation Bypass Attempt
Control: VLAN/zone policies, internal firewall rules
Expected: Deny traffic between unauthorized zones
Remediation: Validate zone policy enforcement with regular automated segmentation testing across all sensitive zones.
Illustrative scenarios — outcomes depend on your network configuration, firewall policies, IDS/IPS rule sets, and SIEM correlation. All simulations use safe artifacts and target scope-approved hosts and network zones only.
Measurable Outcomes
Measure Blocking, Detection, Segmentation, and Response Effectiveness.
Network Infiltration & Malware Validation (NIMV) produces concrete, evidence-backed outputs across north-south and east-west network paths — giving security teams clear metrics for remediation prioritisation, executive reporting, and compliance evidence.
NIMV does not only show whether traffic was sent. It shows whether your network controls blocked it, detected it, logged it, correlated it in the SIEM or NDR, and provided enough evidence for investigation — and maps each outcome to the MITRE ATT&CK technique that was simulated.
What Valitrix NIMV measures
- Blocked vs detected vs missed network behaviors by scenario
- NGFW, firewall, IDS, and IPS prevention effectiveness
- C2 traffic detection coverage and beaconing visibility
- Malware traffic inspection and policy enforcement effectiveness
- DNS tunneling detection capability and resolver logging quality
- Segmentation bypass paths and east-west movement exposure
- Lateral movement detection coverage by network zone
- Egress filtering effectiveness by protocol and destination
- SIEM and NDR telemetry quality and alert generation per scenario
- Network risk score by attack scenario and control category
- Remediation status and retest evidence across campaigns
All results are tagged by ATT&CK technique ID, control type, and risk severity — giving teams a clear action plan for improving network defense effectiveness across every zone.
Validate North-South and East-West Network Controls
From network bypass to remediation.
NIMV maps each simulated network attack scenario to the specific control that was tested — firewall, IDS, IPS, DNS security, proxy, or SIEM correlation rule. When a control fails, the result is not just a red flag: it is a specific, mapped gap with actionable remediation guidance attached.
North-south validation covers external-facing controls — ingress malware, egress filtering, and outbound C2 detection. East-west validation covers internal network paths — lateral movement, segmentation enforcement, and internal discovery visibility.
North-SouthNGFW / IPS
Malware delivery traffic not blocked at perimeter
→ Enable IPS signature enforcement for delivery traffic categories
North-SouthProxy / Egress Filtering
C2 beaconing allowed to suspicious external destinations
→ Create egress deny rules for C2 destination patterns; enable behavioral proxy analytics
North-SouthDNS Security
DNS tunneling patterns not flagged by resolver
→ Enable DNS query anomaly detection and SIEM forwarding for abnormal query volumes
East-WestSegmentation / VLAN Policy
Lateral movement allowed between user and server zone
→ Enforce deny-by-default between zones; review VLAN firewall rule exceptions
East-WestIDS / Internal Firewall
SMB lateral movement traffic not detected internally
→ Enable internal IDS visibility for east-west SMB traffic; add SIEM correlation rule
North-SouthSIEM / NDR Telemetry
Network security event not forwarded to SIEM
→ Review network log source configuration and SIEM ingestion pipeline for this traffic type
Illustrative gap findings — results depend on your network architecture, firewall policies, IDS/IPS rule sets, and SIEM integration.
Network Infiltration & Malware Validation Use Cases
Real-world scenarios where NIMV delivers evidence.
Validate NGFW and firewall policy changes
Confirm that firewall and NGFW policy updates are correctly enforced before or after deployment across your network.
Test IDS and IPS against realistic attack traffic
Measure IDS and IPS detection effectiveness against malware-like traffic, exploit patterns, and C2 behaviors beyond the vendor test lab.
Measure malware and C2 detection readiness
Run controlled C2 beaconing and malware delivery simulations to confirm detection and escalation workflows are effective.
Validate DNS tunneling and outbound traffic detection
Test whether DNS security, resolver logging, and SIEM correlation rules identify suspicious DNS behavior before it enables data staging or C2 communication.
Test internal segmentation and east-west controls
Confirm that internal network zones, VLANs, and firewall rules prevent unauthorized lateral movement between users, workloads, and sensitive environments.
Support SOC tuning and network detection engineering
Give detection engineers repeatable, evidence-backed network simulation evidence to validate SIEM rule improvements and SOC network alert playbooks.
Prepare evidence for audits and board reporting
Generate ATT&CK-mapped, time-stamped network control validation evidence for compliance requirements and executive cyber resilience reporting.
Validate network telemetry feeding SIEM, SOAR, and NDR
Confirm that network security events are correctly ingested, correlated, and generating actionable alerts for automated response workflows.
Built for Security Teams
Who uses Network Infiltration & Malware Validation (NIMV)?
CISO
Evidence-based network defense effectiveness, risk reduction measurement, executive reporting, and investment validation that replaces configuration assumptions with proof.
SOC Manager
Reduce missed network detections, improve alert quality, validate escalation workflows, and confirm SOC investigation playbooks receive sufficient telemetry.
Network Security Team
Tune firewall, NGFW, IDS, IPS, proxy, DNS, and segmentation policies based on tested evidence — not assumed policy correctness.
Detection Engineer
Improve SIEM correlation, network detection logic, C2 detection rules, DNS tunneling alerts, and SOC network investigation playbooks with repeatable simulation evidence.
Security Architect
Validate network architecture, segmentation design, traffic inspection points, and telemetry coverage before and after major network changes.
Red / Purple Team
Run controlled network scenarios to validate whether offensive techniques generate the expected defensive outcomes — blocked, detected, and logged correctly.
Controlled, Authorised, and Scope-Approved
Valitrix NIMV is designed to run controlled, authorised simulations using safe simulation artifacts — not real malware, real exploit code, or real data theft. All simulation traffic targets approved test hosts, scoped network zones, and explicitly authorised infrastructure. Simulations must follow the organisation's approved testing scope, change management window, routing rules, logging requirements, and legal and compliance approvals before execution.
Valitrix does not conduct destructive exploitation, uncontrolled lateral movement, or real data exfiltration. The distinction between controlled simulation traffic and real attacker activity is a core principle of the platform.
Why Valitrix NIMV
Evidence-first network validation, built for continuous improvement.
Practical, evidence-first validation
Every result is backed by simulation evidence — blocked, detected, allowed, or missed — not assumed network policy coverage.
North-south and east-west coverage
NIMV validates both external-facing and internal network paths — covering ingress threats, egress control, and lateral movement containment.
Designed for continuous improvement
NIMV is not a one-time network test. Run campaigns continuously, retest after firewall changes, and track network control drift over time.
Full-stack network security validation
Network, endpoint, email, and SIEM validation work together in Valitrix — so you see how network gaps interact with your entire security stack.
Clear network defense effectiveness metrics
NGFW prevention ratio, segmentation bypass count, C2 detection coverage, DNS visibility, and SIEM alert quality are all measurable outputs.
Useful for executives and network engineers alike
Generate executive-ready network risk reports and granular technical remediation guidance — firewall rules, IPS tuning, DNS policies — from the same validation run.
Frequently Asked QuestionsNetwork Infiltration & Malware Validation,
Network Infiltration & Malware Validation,
explained.
Network Infiltration & Malware Validation (NIMV) is the continuous process of testing network security controls against realistic attacker traffic to verify whether malicious activity is blocked, detected, logged, segmented, and escalated correctly. It covers malware delivery traffic, command-and-control communication, DNS tunneling, lateral movement, exploit traffic, and controlled exfiltration — producing evidence-based visibility into what your network security stack stops, detects, and misses.
A network penetration test is a manual, point-in-time engagement — typically annual or tied to major changes. Network Infiltration & Malware Validation (NIMV) is continuous, automated, and repeatable — running controlled simulations against your live network controls on an ongoing basis so you always have an up-to-date picture of your network security posture. NIMV complements penetration testing; it does not replace it.
Valitrix NIMV generates controlled simulation traffic from approved test hosts or scoped network zones — covering malware delivery patterns, exploit-like traffic, suspicious outbound connections, C2 beaconing, and lateral movement behaviors. It then measures whether the NGFW, IDS, or IPS blocked, detected, logged only, or missed each behavior, and surfaces specific remediation guidance for each gap found.
Valitrix NIMV is designed to run controlled, authorised simulations using safe simulation artifacts — not real malware, real exploit code, or real data theft. All test traffic targets approved hosts, scoped network zones, and explicitly authorised infrastructure. Simulations must follow the organisation's approved testing scope, change management window, routing rules, logging requirements, and legal and compliance approvals. Valitrix does not conduct destructive exploitation or real data exfiltration.
Valitrix NIMV can simulate: malware delivery traffic patterns, HTTP/S command-and-control beaconing, DNS tunneling and suspicious DNS lookups, lateral movement and SMB abuse scenarios, exploit-like traffic replay, suspicious outbound transfers, encrypted channel abuse, network segmentation bypass attempts, and controlled exfiltration simulations. All scenarios are mapped to MITRE ATT&CK tactics and technique IDs.
Yes. Valitrix NIMV specifically simulates C2 beaconing patterns — HTTP/S callbacks, beaconing intervals, suspicious outbound connections — and measures whether firewall, proxy, NDR, and SIEM controls detect or block the behavior. For DNS tunneling, NIMV simulates suspicious DNS query patterns and measures whether DNS security, resolver logging, and SIEM rules identify and escalate the activity.
Yes. Valitrix NIMV validates not only whether a network control blocked traffic, but also whether the event was forwarded to the SIEM or NDR platform, whether correlation rules triggered, and whether a meaningful alert was generated for the SOC. For missed detections, NIMV surfaces remediation guidance including firewall rule recommendations, segmentation changes, DNS policy tuning, and SIEM detection logic improvements.
NIMV is relevant for CISOs who need evidence-based network defense effectiveness reporting, SOC managers who want to reduce missed network detections and improve alert quality, network security teams tuning firewall and IDS/IPS policies, detection engineers improving SIEM correlation and C2 detection logic, security architects validating network segmentation design, red and purple teams verifying that offensive techniques generate expected defensive outcomes, and compliance and GRC teams generating repeatable validation evidence for audits.
Explore the full Valitrix security validation platform
Network controls are one layer of defense. Valitrix validates the full security stack — endpoint, email, network, and SIEM — so you see how every layer interacts.
See What Your Network Defenses Are Missing
See if your network defenses can stop real attacks.
Run a guided Valitrix NIMV demo and see how controlled network simulations expose C2 visibility gaps, malware traffic bypasses, segmentation weaknesses, DNS tunneling blind spots, and SIEM detection issues before attackers exploit them.