Windows Updates ===================== To only allow Windows Updates you can use a DNS Network Object. Create the Network Object with the following DNS Names: - windowsupdate.microsoft.com (Exact Match) - *.windowsupdate.microsoft.com (Direct Subdomains) - *.update.microsoft.com (Direct Subdomains) - *.windowsupdate.com (Direct Subdomains) - download.windowsupdate.com (Exact Match) - download.microsoft.com (Exact Match) - *.download.windowsupdate.com (Direct Subdomains) - wustat.windows.com (Exact Match) - ntservicepack.microsoft.com (Exact Match) - go.microsoft.com (Exact Match) - dl.delivery.mp.microsoft.com (Exact Match) You can use the Network Object in a Firewall Rule as Destination. Please also make sure to disable IPS in the rule under the advanced settings.