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Parent topic: Kerberos Requirements

Configuring Kerberos Environment / Kerberos Requirements

TCP/IP Network Connectivity

Specific ports need to be opened to support TCP/IP network connectivity.

TCP/IP network connectivity should be operational:

between the client and the domain controller(s)
between the client and the target server

If you are going through a firewall, several TCP/UDP ports need to be opened.

Table 1. TCP/UDP ports to be opened
Port	Service	On Server
53/TCP/UDP	DNS	DNS server
88/TCP/UDP	Kerberos ticket-granting service	KDC server
123/TCP/UDP	Time service	Time server

External Reference:

TCP/UDP ports are listed in Troubleshooting Kerberos Errors - Chapter: Infrastructure Requirements - Section: TCP/IP Network connectivity
Note: Download the document to access this information.