How many rules are needed on a Check Point Firewall for a user to access a web page and retrieve its DNS lookup?

A single rule is sufficient for a user to access a web page and retrieve its DNS lookup because Check Point firewalls utilize Stateful Inspection technology. This means that the firewall maintains a table of active connections and can dynamically allow return traffic based on the outgoing requests that have already been permitted.

When a user sends a DNS query, the firewall tracks this outgoing request and can automatically allow the incoming response. Similarly, when an HTTP request is made to access a web page, the corresponding response is tracked and allowed back through the firewall without needing a separate rule.

This capability simplifies rule management, as only a single rule is needed to both initiate and receive the relevant traffic, provided that the rule is configured to permit both the DNS and HTTP traffic types. As a result, the efficiency and effectiveness of Stateful Inspection technology allow for a streamlined approach to managing network traffic through the firewall.