Cloud Firewall Management: AWS, Azure, and GCP Security Groups in One Dashboard

Your Palo Alto policies live in Panorama. Your FortiGate rules are in FortiManager. Your AWS Security Groups are scattered across 14 accounts. Your Azure NSGs were created by a developer who left six months ago. And your auditor wants a unified view of all of it by Friday. Welcome to cloud firewall management in 2026.

This is not a theoretical problem. Every organization running hybrid infrastructure — and that is most organizations — faces the same challenge: cloud security groups and on-premises firewalls serve the same function (controlling network access) but use completely different models, APIs, and terminology. Managing them separately creates blind spots. Managing them together requires normalization.

The Three Cloud Firewall Models

Before talking about unified management, you need to understand what makes each cloud provider's firewall model different. They all control traffic. They all use rules. But the abstractions, defaults, and evaluation logic vary in ways that break assumptions from on-premises firewall management.

AWS Security Groups and NACLs

AWS uses a two-layer model. Security Groups are stateful firewalls attached to ENIs (Elastic Network Interfaces) at the instance level. Network ACLs (NACLs) are stateless firewalls at the subnet level. Most teams rely primarily on Security Groups.

The "no deny rules" behavior is the biggest conceptual gap for teams coming from traditional firewalls. On a Palo Alto or FortiGate, you build rules with explicit allow and deny actions, ordered by priority. In AWS, the only way to block specific traffic is to not allow it — or use NACLs, which add complexity and are frequently misconfigured.

Azure Network Security Groups (NSGs)

Azure NSGs sit closer to the traditional firewall model. They support both allow and deny rules with explicit priority ordering. NSGs can be attached to subnets or individual NICs, and Azure evaluates rules by priority number (lowest number wins).

Azure also offers Azure Firewall as a managed, centralized firewall service — closer to a traditional NGFW with threat intelligence, FQDN filtering, and centralized logging. Many enterprises run both NSGs (microsegmentation) and Azure Firewall (perimeter control), adding another layer to manage.

GCP VPC Firewall Rules and Policies

Google Cloud takes yet another approach. VPC Firewall Rules are defined at the VPC network level and apply to instances based on target tags or service accounts. In 2023, Google introduced Hierarchical Firewall Policies at the organization and folder level, adding top-down policy inheritance.

GCP's hierarchical model is the most flexible of the three but also the most complex to audit. A rule that appears to allow traffic at the VPC level might be overridden by an organization-level deny policy — and determining that requires checking multiple policy layers.

The Normalization Challenge

Here is the core problem. A Palo Alto firewall rule has a source zone, destination zone, source address, destination address, application, service, and action. An AWS Security Group rule has a protocol, port range, and source (IP or SG reference). An Azure NSG rule has a priority, direction, access action, protocol, source, and destination. A GCP firewall rule has a direction, action, priority, target tags, and IP ranges.

Same intent — control network access. Five completely different data models. Unified management means normalizing these into a common schema without losing the provider-specific semantics that matter for implementation.

A proper normalization layer translates each provider's native rules into a common policy model — source, destination, service, action, and metadata — while preserving the original representation for implementation. This is what separates a real unified management platform from a dashboard that just shows rules side by side.

Compliance in Hybrid Environments

Compliance frameworks do not care which cloud provider you use. PCI DSS Requirement 1 requires you to "install and maintain network security controls" — whether those controls are Palo Alto policies, AWS Security Groups, or Azure NSGs. ISO 27001 Annex A.13 requires network segmentation controls. SOC 2 CC6.1 requires logical access controls. The auditor asks one question: "Show me your controls and prove they work."

The challenge is evidence. On-premises firewalls have configuration exports and syslog. AWS has CloudTrail and VPC Flow Logs. Azure has Activity Log and NSG Flow Logs. GCP has Audit Logs and Firewall Rules Logging. Each generates evidence in different formats, stored in different locations, with different retention policies.

A unified cloud firewall management platform consolidates this evidence into a single audit trail. Every rule change — whether it was a Security Group modification in us-east-1, an NSG update in West Europe, or a Palo Alto commit in your data center — appears in one timeline with who changed what, when, why, and who approved it.

What Unified Cloud Firewall Management Looks Like

"Unified" does not mean identical. Each provider's firewall model has legitimate differences that exist for good reasons. Unified management means three things:

Common Cloud Firewall Risks

Cloud security groups are easy to create and even easier to misconfigure. Unlike on-premises firewalls where changes typically go through a network team, cloud security groups are often modified by developers, DevOps engineers, or automation pipelines with minimal oversight. These are the patterns we see most frequently:

Building a Hybrid Firewall Management Strategy

If you are managing both on-premises firewalls and cloud security groups, here is a practical approach to unification:

Step 1: Inventory Everything

You cannot manage what you cannot see. Start by building a complete inventory: every firewall, every security group, every NSG, every GCP firewall rule. Include the owner, the last modification date, and the associated workload. Most teams discover 30-40% more security groups than they expected.

Step 2: Define a Common Policy Standard

Establish a normalized rule format that works across providers. At minimum: source, destination, service/port, action, business justification, owner, and review date. Map each provider's native fields to this standard. This becomes your single source of truth for compliance reporting.

Step 3: Unify Change Control

Every security group change should go through the same workflow as an on-premises firewall change: request, risk assessment, approval, implementation, verification. The implementation method differs (API call vs. CLI command), but the governance process is identical. This is what auditors care about.

Step 4: Automate Drift Detection

Cloud environments change faster than on-premises networks. Continuous monitoring catches unauthorized changes, Terraform drift, and policy violations in near real-time. Alert on deviations from your approved baseline — especially 0.0.0.0/0 rules and changes to production security groups.

Step 5: Consolidate Reporting

Generate compliance reports that span all environments. When your PCI QSA asks about network segmentation controls, the answer should not be "let me check three different consoles." A single report covering all firewalls and security groups — with change history, approval records, and current rule analysis — is what separates teams that pass audits from teams that survive them.

Getting Started

Managing cloud security groups alongside traditional firewalls is not optional anymore — it is the baseline expectation for any compliance framework published after 2020. The tools and approaches exist. The challenge is execution.

FwChange provides unified visibility across on-premises firewalls and cloud security groups from AWS, Azure, and GCP. Multi-vendor policy normalization, structured change workflows, and automated compliance mapping — in a single dashboard that deploys in hours, not months.

Start with a free firewall audit to see how your current on-premises and cloud security posture maps to compliance frameworks. No sales call, no commitment — just clarity on where your gaps are.