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Cisco Webex Meeting is a web conferencing app that uses uncategorized dynamic domains and IP addresses (CIDR ranges) that change without notice. Previously, Umbrella’s Secure Web Gateway (SWG) would block these domains and IP addresses, if customers used Web Policies that blocked Uncategorized domains and IP addresses.
To ensure SWG does not interrupt Webex Meeting services by blocking these uncategorized domains and IP addresses, Umbrella’s Policy Engine will categorize these Webex-related domains and IP addresses as “Online Meetings” on an ongoing basis.
This means customers are no longer required to manually manage or maintain Webex Meetings domains or IP addresses in Destination Lists or Selective Decryption Lists.
The domains used by Webex Meetings can be seen at https://help.webex.com/en-us/article/WBX264/How-Do-I-Allow-Webex-Meetings-Traffic-on-My-Network?#id_135010
The IP addresses used by Webex Meetings can be seen at https://help.webex.com/en-us/article/WBX264/How-Do-I-Allow-Webex-Meetings-Traffic-on-My-Network?#id_135011