Sunday, February 24, 2019

Confused with term Active Directory

Is On-premise Active Directory (Windows Active Directory) same as Azure Active Directory? In continuation to my previous blog post, this was one of another question asked to me.     

Well, although these both are active directories but there are few differences though. Let’s have a look at those:

  • Location - The most basic difference is, Windows AD is on-premise whereas Azure AD is cloud based.
  • Initial moto – As Azure AD is a cloud based, some web service support is associated, unlike unadorned AD
  • Protocols Used – Both the active directories use different protocols. As Azure AD uses SAML and oAuth whereas unadorned AD relies on NTLM and Kerberos for authentication and LDAP to query/modify
  • Platform support – When it comes to provide support on other platforms apart from Windows, it is nightmare with Windows AD and requires more time and effort. But the same thing can be executed very smoothly with Azure AD as it just needs a registration with any one of your Microsoft cloud application, i.e. o365, Microsoft Intune, Microsoft Azure, etc.
One can visit here to know more on Azure AD. Happy learning.

Monday, February 11, 2019

Windows Authentication & Forms-based Authentication


During my recent interaction with one of the development teams, I came across few queries. Hence, I decided to cover those general questions as part of my few upcoming blogs.
The very first question I received is, when should one go for Windows authentication and when one should go for Form-based authentication?
Now here one of the common response one can receive is – use Forms authentication whenever the user can supply username/password and go for Windows authentication whenever the user can use Windows Login System.
No doubt, this response is correct. But there are few more points which can elaborate it. Let’ have a look at those:
  • If user accounts are created in AD – go for Windows authentication using ActiveDirectoryMembershipProvider
  • If user accounts are created in database, i.e. SQL Server – go for Forms-based authentication using respective membership providers, i.e. SqlMembershipProvider
  • If user accounts are created in database whose direct member ship providers are not available – go for Forms-based authentication by writing custom provider
  • If Windows authentication can not be used with AD for any reason – go for Forms-based authentication
  • If you need more secure policies for password management - go for Windows authentication
  • If you want to use existing account management tools - go for Windows authentication        
I hope these few points will add some more to your knowledge. Happy learning.