What traffic does a WAF inspect?
A Web Application Firewall inspects HTTP/HTTPS requests using application rules. It can reduce risks from patterns such as SQL injection and XSS. API paths, file uploads and session behavior need application-specific review. Protection depends not just on rule count but on correct placement and ongoing tuning.
WAF and DDoS mitigation complement each other
A volumetric DDoS attack can exhaust connectivity or network resources. A WAF focuses on the contents and behavior of application requests. Traffic should pass through appropriate network protection and then application protection. Direct access to an origin that bypasses these layers can leave a gap. Capacities and exclusions should be documented in service scope.
False positives are an operational concern
A legitimate form or API request can trigger a rule. Coordinate observation, tuning and enforcement with the application team. Exceptions should be justified and narrow; limit the relevant parameter rather than leaving an entire path unprotected. Logs may contain personal data, so retention, access and location require separate assessment.
A WAF does not fix code
A WAF does not remove application vulnerabilities or guarantee blocking every attack. Use it alongside secure development, updates, access controls and testing. F2Cloud WebShield considers DDoS mitigation, WAF, firewalls and load balancing together. Application code and releases remain the customer's responsibility unless agreed otherwise.
Pre-decision checklist
- Check direct access to the origin.
- Assign an owner for rule tuning.
- Ask where logs are kept and for how long.