Firewalls, routers, switches, VPN gateways, wireless controllers, and security appliances enforce many of the boundaries that protect business systems. When rules accumulate over time, unused access remains open, management interfaces are exposed, or logging is incomplete, the network may appear controlled while still carrying avoidable risk.

Cryptika reviews firewall and network device configurations to identify risky rules, weak administrative access, hardening gaps, segmentation issues, and evidence weaknesses that affect security, audit, and compliance posture.

What Is Reviewed

• Firewall policies, rule bases, NAT rules, and object groups.
• Inbound, outbound, inter-zone, VPN, and management access rules.
• Any-any rules, overly broad access, stale rules, and undocumented exceptions.
• Administrative access controls, MFA integration where available, and role separation.
• Logging, alerting, retention, and forwarding to monitoring platforms.
• Network device hardening, unused services, firmware status, and backup configuration.
• Segmentation enforcement between users, servers, DMZ, cloud, third parties, and critical systems.

Network rules often reflect years of projects, emergency changes, vendor access, temporary exceptions, and business growth. Without review, the organization may carry open paths that no longer have a business owner. Auditors and regulators also expect evidence that network security controls are defined, reviewed, and monitored.

How Cryptika Delivers the Work

• Confirm device types, zones, traffic flows, and rule-review scope.
• Review configuration exports, diagrams, asset context, and change records.
• Identify broad, risky, duplicate, stale, or undocumented rules.
• Assess management-plane security, admin access, logging, and backup controls.
• Validate segmentation assumptions against actual rule behavior where evidence allows.
• Prepare cleanup recommendations with business-owner and change-control considerations.

Expected Deliverables

• Firewall and network device review report.
• Risk-rated rule and configuration findings.
• Rule cleanup and exception-management recommendations.
• Management-access and logging observations.
• Segmentation and exposure notes.
• Remediation roadmap for security and audit readiness.

Methodology Basis

The review may use CIS Controls, vendor hardening guidance, NIST CSF 2.0, ISO/IEC 27001, PCI DSS, NCA requirements, CBJ expectations, and client network-security policies. These are common examples and do not limit the scope.