Forum Discussion
Kavindu Asanga Dayananda
Feb 21, 2023Copper Contributor
Block Outlook externally - Exchange Online/On-Premises
Hi
We have a hybrid (Exchange 2016) with Exchange Online and wants to block/restrict users connecting Outlook, outside of our network.
What options do we have to achieve this?
Regards,
Kavindu
- Dan_SnapeSteel ContributorIf your mailboxes are in Exchange Online, then the best option is Conditional Access. Pretty much the whole idea of cloud services is that you can access them from anywhere. If the mailboxes are on-premises, it should be simple to block access to Exchange from outside your network
- Kavindu Asanga DayanandaCopper ContributorThanks Dan,
But how do you think we can do that for Exchange on-premises?- Dan_SnapeSteel ContributorThe simplest is to block any traffic destined for Exchange servers at the perimeter firewall