Which component is used to filter IPv4 addresses in Citrix ADC?

• A. Citrix Web App Firewall
• B. Pattern Set
• C. Data Set
• D. URL Set

Answer: (A)

In Citrix ADC, filtering IPv4 addresses is handled at the Web App Firewall layer because it provides HTTP-layer security controls, including blocking or allowing requests based on the client’s IP address as part of a policy. You can create a WAF policy that matches the client IP (or a propagated address from headers like X-Forwarded-For) and enforces a deny action to filter out those addresses. The other options are used for different kinds of rule-building within the WAF: Pattern Sets are for matching specific strings in content, URL Sets are for matching particular URL patterns, and Data Sets are used for data-driven rule values. While these can be components of WAF rules, they don’t directly perform IP-based filtering by themselves, making the Web App Firewall the appropriate choice for filtering IPv4 addresses.