ERAY17BG
March update will make NO changes
* Do I have problems between DC and Clients if I don't apply the article? NO, but your are vulnerable
* First, on which system should I apply this update? ALL SYSTEMS should be updated. This is a monthly update. Regarding these specific settings, changes are made only on DC policy. For 2008 and 7 you need ESU license, see ADV190023 below
* LDAP Channel Binding and LDAP Signing Requirements
* What steps should I do to configure LDAP Channel Binding and LDAP Signing Requirements. Are the procedures in the article sufficient? YES
* AD domain name: I have to use "Active Directory Certificate Services" because it is domain.local, right? What do you mean? You need a certificate if you want to configure LDAPS, and this is preferable/easier to be from your Enterprise CA installed in you domain
https://support.microsoft.com/en-us/help/4520412/2020-ldap-channel-binding-and-ldap-signing-requirements-for-windows
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV190023
Alan @ PFE