In the initial post, we looked at PTA from a high-level perspective. This post goes into the actuals and internals of the PTA to ensure you can convince your security department on why PtA is a very good idea. Inside Azure AD there are multiple components that work together to ensure the safety of your […]
Category: Active Directory
So, I got a question the other day on using ADFS in combination with some 3rd party applications in a very large AD environment. Basically the problem statement was: “ we don’t want to use UPN and we don’t want to use domain\username. Users should be able to login using either (only) their employeeID or […]
On Monday morning, the office opened, and everyone tried to login to their computers, however no-one seemed to be able to login. The helpdesk was quickly flooded with calls and it seems everyone’s account was locked-out.
It could happen to almost every company that does not have a good policy on lockouts. Hackers try as many usernames and passwords as possible to get in or to deliberately lock everyone out. A Denial of Service attack in a different form.
When you are using Azure Active Directory with a password on-premises, this might become a reality. As many attempts are made on the ADFS server in a Federated architecture, the account in AD itself gets locked out.
But there is a way to avoid that. It is possible to have a pre-emptive lockout on ADFS while the internal AD account is still usable. This means users will not be able to login remotely to ADFS anymore for a period, but they will still be able to logon to their domain joined machines. When configuring this, make sure that the lockout is set to a lower standard than your internal AD policies. For example, if your AD policy states 5 attempts, 10 minute lockout, ensure that the ADFS policy is set to a maximum of 4 attempts.
In Azure Active Directory you have the option to create dynamic groups. These are groups where members are added based on a formula that uses the attributes known on a user object in Azure AD. For example you can create a dynamic group of all users that have a specific job title: But what if […]
When setting up Azure Data Lake services, it is possible to combine access to the actual data with Azure Active Directory B2B. The combination of these services allow external vendors and or partners to connect to the data in Azure Data Lake, but under the governance of your and their company. The logins for accessing […]
There are multiple options for authenticating users against Azure AD. But until now, full support for SSO based logins was only possible using two options. Azure AD joined devices, or a local ADFS service to your on-premises Active Directory. The latter being the most used option it also had its problems, first of all you […]
When you want to enable MultiFactorAuthentication (MFA) for Azure / Intune / Office 365 / Dynamics 365 and you are using federated logins and want to have the MFA provider to be on-premises (integrated with ADFS/PingFed/other) integrated.. you might run into an issue where the Azure MFA page keeps popping-up and asking you to register […]