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Network connections

This page shows the communication details for required and optional network connections.

From Android devices to the internet

Destination Service (Port)
Google Firebase Cloud Messaging (FCM):

All IP blocks listed in Google’s ASN 15169.

Note that IP ranges change frequently. Check the document at least monthly.

FCM (5228-5230)
Zero-touch enrollment:
www.googleapis.com HTTPS (443)
Samsung Knox Mobile Enrollment:
*.samsungknox.com
*.secb2b.com
*.samsung.com
HTTPS (443)
Sophos Intercept X for Mobile:
sdds3.sophosupd.com
sdds3.sophosupd.net
HTTPS (443)
secureservices.s3.eu-central-1.amazonaws.com HTTP (80)
Sophos Intercept X for Mobile Web Filtering:
4.sophosxl.net/lookup HTTPS (443)
Sophos Intercept X for Mobile Wi-Fi Security:
sslintt.sophos.com
sslintt.sophosupd.com
sslintt.sophosupd.net
HTTPS (443)

From iPhones, iPads, and Macs to the internet

Destination Service (Port)
Apple Push Notification service for iPhones, iPads, and Macs.
17.0.0.0/8 APNs (5223)
Apple service for available iPhone, iPad, and Mac updates. If this URL isn’t available, Sophos Mobile has no information about updates. For example, compliance rules regarding mandatory updates have no effect.
mesu.apple.com HTTPS (443)
Sophos Intercept X for Mobile:
sdds3.sophosupd.com
sdds3.sophosupd.net
HTTPS (443)
secureservices.s3.eu-central-1.amazonaws.com HTTP (80)
Sophos Intercept X for Mobile Web Filtering:
4.sophosxl.net/lookup HTTPS (443)
Sophos Intercept X for Mobile Wi-Fi Security:
sslintt.sophos.com
sslintt.sophosupd.com
sslintt.sophosupd.net
HTTPS (443)

From Windows computers to the internet

Destination Service (Port)
Windows Notification Service (WNS) and Microsoft Push Notification Service (MPNS) for Windows computers.
*.notify.windows.com
*.wns.windows.com
*.notify.live.net
HTTPS (443)

From Chrome devices to the internet

Destination Service (Port)
Google Firebase Cloud Messaging (FCM):

All IP blocks listed in Google’s ASN 15169.

Note that IP ranges change frequently. Check the document at least monthly.

FCM (5228-5230)
Sophos website classification service. Required by the Web Filtering feature of Sophos Chrome Security.
4.sophosxl.net/lookup HTTPS (443)