Security, Identity, and Compliance
CoreAWS WAF
Explicit network-protection audit and troubleshooting log surface.
Key points
- WAF evaluates supported web requests through web ACL associations, rules, priorities, actions, and logs.
Best-known use cases
- D4.1, D4.2, and D5.1: audit or troubleshoot the named HTTP request decision and its web ACL evidence.
What candidates often confuse it with
- WAF works at the web-request layer; Network Firewall inspects VPC traffic and security groups filter resource flows.
Key takeaway
Use WAF logs to identify the rule producing a web decision instead of diagnosing HTTP behavior from Flow Logs alone.
Related services
- AWS Certificate Manager (ACM)
- Amazon EC2 security groups
- Egress-only internet gateways
Relevant exam tasks
- D4.1 — Task 4.1: Implement and manage security and compliance tools and policies.
- 4.1.1 — Implement IAM features (for example, password policies, multi-factor authentication [MFA], roles, federated identity, resource policies, policy conditions).
- D4.2 — Task 4.2: Implement strategies to protect data and infrastructure.
- 4.2.1 — Implement and enforce a data classification scheme.
- D5.1 — Task 5.1: Implement and optimize networking features and connectivity.
- 5.1.1 — Configure a VPC (for example, subnets, route tables, network ACLs, security groups, NAT gateways, internet gateway, egress-only internet gateway).