Ports requirement between IPA master and clients

Is access to these ports between IDM and it's clients/replicas bi-directional ( communication on both directions)?
- 80, 443
- 389, 636
- 88, 464
- 53
- 123

Also, If we do not need DNS and NTP management from IDM, can we just skip ports 53 & 123 during firewall requests? Thanks in advance.