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Whitelist inbound office365 IP addresses

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Last Modified: 2017-04-04
Is there a definitive list of inbound Office365 IP addresses that will try to connect to our WAP server (in a DMZ) that is going to be used for ADFS? The security team are asking whether it is possible to lock down what IP addresses can connect to the server at a firewall level, or is this not achievable?

I am new to ADFS and O365
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I think they are after a list of IP addresses that will be connecting to us, rather than what we will be connecting to in this instance - is there a definitive list?
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