Cisco AnyConnect/Umbrella blocking macOS update
I hope someone can assist....
Cisco AnyConnect is blocking company Macs from seeing new Big Sur 11.6 update.
I need to provide that info to the Cisco support team to have that address whitelisted on their end.
Does anyone know where macOS updates downloads from?
Solution 1:
The easy solution is to unblock 17.0.0.0/8 as one firewall rule.
Here are the details in official form.
- https://support.apple.com/en-us/HT210060
If your firewall can only be configured with IP addresses, allow outbound connections to 17.0.0.0/8. The entire 17.0.0.0/8 address block is assigned to Apple.