Once the connections are allowed, iCloud will function and users will be able to back up their devices or pull information they have stored in iCloud. From here you can, add delete a whitelisted network or IP. To allow the connection on these ports, use the following configuration. Whitelist IP Addresses page describes on how to manage a network or IP address to whitelist. To allow iCloud to function, Apple has a list of ports which need to be allowed for iCloud to function on your client devices. With these rules in place many other features will not work. A user trying to use another protocol, like UDP, or another port, like 25, will be blocked by the firewall. Create whitelist and blacklists of specific URLs. There are two kinds of filter rules: Filter web-pages by content category. The firewall configuration shown in Figure 1 will block all outbound traffic except TCP 80 amd TCP 443 (http and https). The firewall uses Comodo Web Filtering (CWF) to monitor websites accessed through the HTTP proxy service.The feature also allows you to create custom filtering profiles. Explicit deny rule blocking iCloud traffic. The purpose of this KB is to discuss the ports Apple iCloud needs access to perform backups and access data stored on iCloud.įigure 1. When using restrictive Layer 3 Firewall Rules for outbound traffic on the MX Security Appliance, services such as Apple iCloud can sometimes be inadvertently blocked. ![]() Whitelisting Apple iCloud services on a restrictive firewall
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