Conditional Access: Skip MFA for Company Devices on the Company Network

Wed, 31 Mar 2021 07:13:29 +0000

A common Conditional Access policy is to add trusted locations as an exception to multi-factor authorisation requirements. The logic goes, if you accessing resources such as Office 365 from a location such as the corporate office, that’s an element of verification in itself that your login should be trusted, so we should improve your user experience by removing MFA. Personally, I support the use of MFA regardless of where you are authenticating (at the very least, if you have an Azure AD admin role assigned). However, doing something like this is a great option if you are introducing MFA from scratch: you will improve user buy in the less you change their standard experience. Then, increase the scope gradually.

Understanding Modern vs. Legacy Authentication in Microsoft 365

Sun, 24 Jan 2021 13:46:35 +0000

Since October 2019, Microsoft has enabled Security Defaults by default in new Microsoft 365 tenants. Security Defaults are a group of best-practice security settings, and one of note is the disablement of all legacy authentication, which itself has been off in Exchange Online and SharePoint Online, by default, since August 2017.

The term legacy authentication doesn’t refer to one particular protocol, but rather any that do not support Multi-Factor Authentication (MFA). Protocols that support MFA are described as modern authentication. In the context of Microsoft 365 and Azure Active Directory, which handles Microsoft 365’s authentication, these are protocols such as ADAL and OAuth.

Mfa on Ru Campbell MVP

Conditional Access: Skip MFA for Company Devices on the Company Network

Understanding Modern vs. Legacy Authentication in Microsoft 365