How to use the list catalog The List Catalog is a catalog of the lists used by the policy rules. Examples of list types are strings, regular expressions, and IP addresses. For example, you can configure a rule that allows all traffic sent from a list of client IP addresses. Lists simplify policy configuration. You can view and configure lists in the List Catalog, which consists of these list categories. Certificate Authority -- Trusted root CAs. Host and certificate -- Host name and certificate pairs used to allow certificates that are otherwise invalid, such as recently expired certificates. IP -- Individual IPv4 or IPv6 addresses. IP range -- Ranges of IPv4 or IPv6 address using a starting and ending IP address or CIDR notation. Media type -- Predefined or custom media types used to categorize document types, audio formats, or video formats. Number -- Numbers associated with different objects, such as ports. Regular expression -- String matching using Perl regular expression syntax. Smart Match -- Mixed URLs, host names, IP addresses, and domains. String Strings associated with different objects, such as process names. URL category -- Predefined or custom URL categories.