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?

  • 1
    I'd tell then not to block http://swcdn.apple.com/, https://swscan.apple.com and https://swdist.apple.com/, although there may be some others as well. Commented Sep 21, 2021 at 0:27

1 Answer 1


The easy solution is to unblock as one firewall rule.

Here are the details in official form.

If your firewall can only be configured with IP addresses, allow outbound connections to The entire address block is assigned to Apple.

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