Skip to main content
Firewall audit security shield icon
Firewall audit team reviewing network security controls at Codesecure Chennai

Expert Firewall Audit Services in Chennai

Codesecure Solutions is a leading firewall audit company based in Chennai, India, specializing in comprehensive assessment of firewall configurations, access control rules, and network segmentation strategies. Firewalls are the critical perimeter defense protecting your organization from external threats, but misconfigured rules, redundant policies, and conflicting access controls can create dangerous security gaps that attackers exploit.

Our dedicated firewall security team conducts thorough audits of your firewall infrastructure to identify rule weaknesses, test access control effectiveness, and verify that your firewall policies align with your organization's security objectives. We audit all major firewall platforms including Palo Alto Networks, Fortinet FortiGate, Cisco ASA, Check Point, Juniper SRX, and cloud-based firewalls. Our firewall security audit services ensure your network perimeter is properly hardened, your access controls are effective, and your firewall is truly protecting your most critical assets against real-world attack scenarios.

4500+ security projects completed globally

4500+

Global Projects
150+ clients protected with firewall audits

150+

Clients Protected
100% service delivery guarantee

100%

Service Guarantee
20+ certified firewall security experts on staff

20+

Security Experts

Our Firewall Audit Services

Our firewall audit services in Chennai cover every aspect of firewall security, from rule documentation and analysis to access control testing and effectiveness verification. We take a holistic approach to ensure your firewall rules enforce your organization's security policies.

  • Firewall Rule Documentation and Analysis: Complete enumeration and documentation of all firewall rules, policies, and configurations including inbound, outbound, and inter-VLAN rules. Learn more
  • Rule Redundancy and Conflict Identification: Identification of redundant, conflicting, and unused rules that complicate firewall management and potentially create security gaps through rule shadowing effects.
  • Access Control Testing: Controlled testing of firewall rules to verify they function as intended, including testing for implicit deny policies, exception rules, and NAT configurations without disrupting live traffic.
  • Network Segmentation Audit: Assessment of network segmentation strategy including VLAN configurations, DMZ security, and inter-network access controls ensuring proper isolation between trust zones.
  • VPN and Remote Access Security: Testing of VPN gateway configurations, remote access policies, split-tunnel risks, and ensuring proper encryption and authentication for remote connections.
  • Logging and Monitoring Review: Verification that firewall logging is enabled for security-relevant events, logs are forwarded to SIEM for analysis, and alerting is properly configured for anomalous activities.
Firewall audit and security testing services

Comprehensive Firewall Security Framework

Our firewall audit methodology is aligned with industry standards and best practices, ensuring comprehensive coverage of firewall security and network access controls.

Rule Documentation

We create comprehensive documentation of all firewall rules including source/destination addresses, ports, protocols, and actions. This documentation becomes the baseline for identifying anomalies and changes over time.

Rule Optimization

We identify redundant rules, consolidate overlapping policies, and eliminate unused rules that accumulate over time. Rule optimization improves firewall performance and simplifies administration.

Access Control Testing

We test firewall rules through controlled traffic generation to verify rules function as intended. Testing includes testing for rule shadowing, implicit deny, and exception handling without disrupting production traffic.

Policy Alignment

We verify that firewall rules align with your organization's documented security policies. We identify cases where rules conflict with policy and provide recommendations for remediation.

Segmentation Review

We assess network segmentation strategy and verify that firewalls properly enforce segmentation between trust zones, DMZs, and sensitive networks including payment and healthcare networks.

Logging Verification

We verify that firewall logging is enabled for security-relevant events, logs are forwarded to SIEM systems, and that alerting is properly configured for unauthorized access attempts.

Why Choose Codesecure for Firewall Audit Services

Organizations across Chennai and India trust Codesecure Solutions for firewall security assessments. Here is what makes our approach effective and reliable.

  • Multi-Platform Expertise: Our team has hands-on experience with all major firewall platforms including Palo Alto Networks, Fortinet, Cisco, Check Point, and Juniper including cloud firewalls.
  • Non-Disruptive Testing: All firewall testing is conducted in a non-disruptive manner ensuring your network remains operational. We can test in staging environments or use controlled traffic generation.
  • Comprehensive Documentation: We provide detailed rule documentation, network diagrams, and policy mapping that becomes valuable operational documentation for your network team.
  • Compliance-Mapped Reports: Our firewall audit reports align with compliance frameworks including ISO 27001, PCI DSS, and SOC 2.
  • Remediation Guidance: We provide actionable recommendations for rule consolidation, policy alignment, and security hardening with prioritized implementation guidance.
  • Regular Audit Program: We help you establish a regular firewall audit schedule to catch configuration changes that may weaken your perimeter security over time.

Industries We Secure with Firewall Audit

Every organization relies on firewall security to protect their network infrastructure and sensitive data. Our firewall audit experience spans multiple industries in Chennai and across India.

  • Banking and Finance: Multi-tiered firewall architectures protecting customer banking systems, payment networks, and sensitive financial data
  • Healthcare: HIPAA-required network segmentation between clinical systems, administrative networks, and guest networks
  • E-commerce: PCI DSS compliant firewall configurations protecting payment processing networks and customer data
  • Manufacturing: Network segregation between IT systems and operational technology (OT) networks protecting industrial control systems
  • Government: Multi-level security controls and network segmentation for government agencies and contractors
  • Education: Network security for universities and institutions managing large campus networks with multiple trust zones
  • Maritime: Maritime network security and vessel network protection ensuring operational technology safety

Our Firewall Audit Process

We follow a structured methodology for firewall audits that combines industry best practices with practical operational experience.

Phase 1: Discovery and Documentation

We enumerate all firewall devices in your infrastructure and extract complete rule bases. This includes active rules, disabled rules, and policies from all firewall zones and interfaces.

Phase 2: Analysis and Optimization

We analyze rules for redundancy, conflicts, unused rules, and rule shadowing effects. We identify opportunities for consolidation and optimization to improve firewall performance and simplicity.

Phase 3: Access Control Testing

We conduct non-disruptive testing to verify that firewall rules function as intended. Testing includes testing denied connections, allowed connections, and exception rules without affecting production traffic.

Phase 4: Policy Alignment Review

We compare firewall rules against documented security policies to identify conflicts between policy and implementation. We provide guidance for bringing rules into alignment.

Phase 5: Network Segmentation Assessment

We verify that firewall rules enforce proper network segmentation between trust zones. We test for unnecessary cross-zone traffic and verify DMZ isolation and sensitive network protection.

Phase 6: Reporting and Remediation

We deliver comprehensive reports with rule documentation, analysis findings, testing results, and prioritized remediation recommendations mapped to ISO 27001, PCI DSS, and compliance requirements.

Firewall Audit for Regulatory Compliance

Regulatory frameworks increasingly mandate firewall security reviews and access control testing. Our firewall audits help you meet compliance requirements and demonstrate effective network security controls.

PCI DSS Requirement 1 requires network segmentation and proper firewall configuration to protect payment card data. HIPAA Security Rule requires network segmentation controls to protect electronic protected health information. At Codesecure, we align firewall audits with the specific controls required by each regulatory framework applicable to your organization.

For organizations pursuing ISO 27001 certification, our firewall audits provide evidence for controls A.13.1 (network security) and A.13.2 (information transfer). For RBI-regulated banks and NBFCs, we verify firewall configurations comply with RBI guidelines on network security and segregation of critical systems.

Indian organizations increasingly face regulatory requirements for network security. RBI mandates regular review of network security controls for banks and payment processors. SEBI requires proper network segmentation for stock exchanges and brokers. Manufacturing facilities under production safety regulations must segregate operational technology networks using firewalls.

Our firewall audit reports include compliance mapping sections that document how each finding relates to specific regulatory controls. This makes it easy for your compliance team to demonstrate due diligence during audits. Combined with our network security audit and cloud security assessment services, we provide comprehensive network security program coverage.

Frequently Asked Questions About Firewall Audit

Common questions about our firewall audit services in Chennai.

Firewall audit is a comprehensive security assessment of firewall rules, configurations, and access controls protecting your network perimeter. Firewalls are the first line of defense against external threats, but misconfigured rules can leave critical vulnerabilities open. Without regular audit, redundant rules accumulate, conflicting rules create security gaps, and deprecated rules remain active creating unnecessary access pathways. A thorough firewall audit identifies these weaknesses and ensures your firewall enforces your organization's security policies effectively.

Codesecure audits all major firewall platforms including Palo Alto Networks, Fortinet FortiGate, Cisco ASA/Meraki, Check Point, Juniper SRX, pfSense, Sophos, and UTM appliances. We review hardware firewalls, software firewalls, cloud firewalls (AWS Security Groups, Azure Network Security Groups), and next-generation firewalls (NGFWs). Our audits cover both inbound and outbound traffic rules, VPN configurations, and high-availability firewall setups.

Our firewall audit includes documentation of all firewall rules, identification of redundant and conflicting rules, testing of rule effectiveness through access control testing, review of implicit deny policies, analysis of NAT rules and port forwarding, assessment of logging and monitoring capabilities, verification of rule management procedures, and recommendations for rule optimization and security hardening. We also test whether the firewall actually blocks traffic as intended.

Firewall audit duration depends on the complexity of your rule set, number of firewalls, and your network architecture. A typical audit for a single firewall with moderate complexity takes 5 to 10 business days. Large enterprises with multiple firewalls, complex segmentation, and high-availability setups may require 2 to 4 weeks. We provide detailed timelines after initial discovery and rule enumeration. Non-disruptive testing ensures your network remains operational throughout the audit.

Yes. Our firewall audit testing is completely non-disruptive. We test rule effectiveness through controlled traffic generation and monitoring without blocking legitimate business traffic. We work during maintenance windows if necessary and coordinate with your network team. All testing is documented and reversible. We can also perform testing in pre-production or staging environments before testing in production if you prefer.

Strengthen Your Network Perimeter Defense

Get a professional firewall audit from Codesecure Solutions, Chennai's trusted firewall security testing company