Network monitoring software, such as Little Snitch, can be configured to restrict outbound connections from a macOS system. This includes connections to Apple’s software update servers. When this occurs, the operating system is prevented from receiving and installing essential security patches and feature updates. This type of configuration typically arises from user-defined rules within the network monitoring application, instructing it to deny communication with specific Apple domains or IP addresses associated with software distribution.
Controlling network access for software update services can be employed for various reasons. These include delaying updates until compatibility with specific software is verified, preserving a known system configuration for stability, or conserving bandwidth on limited network connections. Historically, such practices were more common in managed IT environments where administrators sought to control software deployments across a fleet of machines. However, individual users might also employ these techniques for personal reasons, such as controlling data usage or delaying disruptive updates.
