What are the required TCP/UCP ports for Kerberos communication?

Hello,

My name is Bassam BALLAJI and I'm an IT professional.

Today, I'm implementing Kerberos authentication for a business application
layer access to let the users authenticate with an external active
directory using LDAPS protocol.

My implementation follows the article below, chapter 1, paragraph "what is
Kerberos?" :
https://techcommunity.microsoft.com/blog/askds/ntlm-vs-kerberos/4120658

I need to know which TCP/ UDP ports are required for the flows 5 + 6,
between client app and service server (not domain controller).

Thanks in advance for your help.
Regards,
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