Firewall Configuration Review & Hardening is a focused security assessment that evaluates the design, rule base, policies, and operational settings of network firewalls to ensure they effectively protect critical assets while minimizing exposure and misconfiguration risks. The service involves a deep analysis of firewall rules, objects, zones, access policies, NAT rules, logging configurations, and management access controls. It identifies security gaps such as overly permissive rules, shadowed or redundant policies, improper trust relationships, insecure administrative access, weak encryption, and insufficient logging. Hardening activities ensure firewalls are configured according to security-by-design principles, enforcing least privilege, proper segmentation, secure management access, strong cryptography, and effective monitoring. The assessment also evaluates firewall placement within the network architecture, including perimeter, DMZ, internal segmentation, cloud, and remote access firewalls. The review is aligned with CIS Benchmarks, CERT-In guidelines, NIST network security controls, GIGW 3.0 (where applicable), and vendor-recommended best practices, ensuring firewalls act as a strong first line of defense against external and internal threats.