Azure PTA Agent

Hi,

I will install new Entra AD Connect 2.4.27.0 on Windows Server 2022 Server.

1 - Are there any known problems with version 2.4.27.0?

2 - I am planning to install PTA on additional machines. AFAIK , its required 3 PTA agents for HA. already installed with Entra AD connect.

My question is : Is it enough that the server with the pta agent installed only has access to the internet? Also, are there any ports that need to be opened between ADConnect and Domain Controller?