Page created: 26 Jul 2021
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Page updated: 14 Jan 2022
The replication server component in each directory server listens on a TCP/IP port for replication communication.
This replication server port, typically 8989, must be accessible from all directory servers participating in replication. The server-to-server communication channel is kept alive using a heartbeat, which occurs every 10 seconds. This traffic prevents firewalls from closing connections prematurely.
The replication command-line utility (dsreplication) requires access to all directory servers participating in replication. This includes the LDAP or LDAPS port of the directory servers.
Tip:
When configuring firewalls, keep these communication requirements in mind.