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Lateral Movement
Paths Remaining
Network Discovery & Architecture Analysis
We map your full network topology, security zones, and trust boundaries to understand how your environment is actually structured versus how it was designed to be. This reveals exposed services, unintended entry points, and architecture gaps that create risk.
Firewall & Access Control Review
Firewall rules accumulate over time and often contain outdated, overly permissive, or conflicting entries. We perform a thorough review of your firewall policies, VPN configurations, and remote access controls to identify what needs tightening and what can be safely removed.
Vulnerability & Misconfiguration Detection
We identify weak protocols, insecure services, and misconfigurations that create lateral movement opportunities across your network. This includes everything from unencrypted management interfaces to unnecessarily open internal routes between network segments.
Adversarial Simulation
We run controlled internal and external attack simulations to test how far an attacker could actually move inside your network. This includes pivoting across segments and privilege escalation testing to demonstrate the real impact of a successful initial compromise.
Monitoring & Intrusion Detection
We configure and tune your IDS and IPS systems to detect real threats rather than generating noise that your team learns to ignore. Traffic analysis and anomaly detection are set up to surface meaningful signals and give your security team actionable alerts.
Hardening Strategy & Reporting
We deliver risk-based remediation recommendations and a long-term network security architecture roadmap. Every recommendation is prioritized based on the actual threat it addresses, with clear steps your team can follow to implement improvements without disrupting operations.
What Makes Us Different From Others
- Lateral Movement Is Our Focus Most network assessments stop at the perimeter. We go inside and show you how far an attacker could move once they're in, because that is where most damage actually happens.
- Firewall Reviews That Go Deeper We don't just flag open ports. We analyze rule intent, age, and actual necessity, identifying rules that should never have been created and ones that have outlived their purpose.
- Architecture-Level Thinking We look at your network as a whole, not a collection of individual devices. Segmentation gaps, trust zone mismatches, and design flaws only become visible when you step back and look at the full picture.
- Simulation-Backed Recommendations Our hardening recommendations are grounded in what we observed during adversarial simulations, not theoretical best practices applied generically.
- IDS Tuned to Catch Real Threats Default IDS configurations alert on everything and mean nothing. We tune detection around your specific environment and realistic threat scenarios so your team gets signal, not noise.
- Practical, Prioritized Roadmap You get a clear, sequenced remediation plan based on actual risk, not a long list of findings sorted by severity score that leaves your team unsure where to start.
Our network had grown organically over eight years with no real segmentation. garrisonOne mapped our traffic flows, identified critical flat-network risks, and redesigned our segmentation. The follow-up pen test confirmed attackers could no longer move laterally from a compromised workstation to our core systems.
Related Services: Endpoint Security | Threat Detection & Response | Penetration Testing | All Cybersecurity Services
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Read Case StudyFrequently asked questions
What does network security cover?
Network security covers the controls, configurations, and monitoring that protect your infrastructure from unauthorized access, lateral movement, and exploitation. It includes your firewall rules, network segmentation, access controls, intrusion detection systems, VPN configurations, and the protocols and services running across your environment.
Why is network segmentation important?
Segmentation limits how far an attacker can move after gaining initial access. Without it, a compromised endpoint can become a launchpad to reach critical servers, databases, and other systems. Good segmentation means a breach in one area stays contained rather than spreading across your entire network.
How often should firewall rules be reviewed?
At least annually, and after any major infrastructure change. Firewall rule sets tend to grow over time and rarely shrink. Old rules stay in place long after they are needed, creating unnecessary exposure. A regular review removes the accumulation of outdated access and tightens your perimeter without disrupting legitimate traffic.
What is the difference between IDS and IPS?
An intrusion detection system monitors traffic and alerts on suspicious activity. An intrusion prevention system does the same but can also block or drop malicious traffic automatically. Both require proper configuration and tuning to be effective. Out-of-the-box deployments are rarely optimized for your specific environment and traffic patterns.
What does a network adversarial simulation involve?
We simulate how an attacker with initial access to your network would attempt to move laterally to reach higher-value systems. This includes testing segmentation controls, privilege escalation paths, and the visibility your monitoring tools have into internal traffic. The goal is to show you what a real attacker could reach and how fast.
Do you assess cloud network environments as well?
Yes. Cloud environments have their own network constructs including virtual private clouds, security groups, and network access control lists that require the same level of scrutiny as traditional infrastructure. Misconfigurations in cloud networking are extremely common and often go undetected for extended periods.
What do we receive from a network security engagement?
You receive a detailed assessment report with all findings, their risk level, and specific remediation steps. We also provide a network hardening roadmap that prioritizes improvements based on the actual threats they address, giving your team a clear sequence to follow rather than a generic list of recommendations.
Can you help secure remote access and VPN infrastructure?
Yes. Remote access is one of the highest-risk areas of network security, particularly for organizations that expanded it rapidly during a shift to remote work. We review your VPN configurations, authentication controls, and split-tunneling policies to close the gaps that attackers commonly exploit in remote access infrastructure.
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Contact
- US: 4752 Euclid Rd Suite 11,
Virginia Beach, VA 23462 - India: Orchard Street, Sector 61,
Gurgaon, Haryana - Phone: (301) 825-5518
- info@garrisonone.com
