TP-Link OC200 Omada Controller Software 4.1.5Windows/Linux User Guide - Page 97

Chapter 4 4. 5. 2 URL Filtering Configure the Network with Omada SDN Controller Overview URL Filtering allows a network administrator to create rules to block or allow certain websites, which protects it from web-based threats, and deny access to malicious websites. In URL filtering, the system compares the URLs in HTTP, HTTPS and DNS requests against the lists of URLs that are defined in URL Filtering rules, and intercepts the requests that are directed at a blocked URLs. These rules can be applied to specific clients or groups whose traffic passes through the gateway and EAPs. The system filters traffic against the rules in the list sequentially. The first match determines whether the packet is accepted or dropped, and other rules are not checked after the first match. Therefore, the order of the rules is critical. By default, the rules are prioritized based on the sequence they are created. The rule created earlier is checked for a match with a higher priority. To reorder the rules, select a rule and drag it to a new position. If no rules match, the device forwards the packet because of an implicit Permit All clause. Note that URL Filtering rules take effects with a higher priority over ACL rules. That is, the system will process the URL Filtering rule first when the URL Filtering rule and ACL rules are configured at the same time. Configuration To complete the URL Filtering configuration, follow these steps: 1 ) Create a new URL Filtering rule with the specified type. 2 ) Define filtering criteria of the rule, including source, and URLs, and determine whether to forward the matched packets. 95