May 2019
Intermediate to advanced
620 pages
21h 41m
English
Content preview from Active Directory Administration Cookbook
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How it works
Global catalog servers are used when you do the following:
- Perform forest-wide searches.
- Perform Exchange Server address book lookups.
- Log on in Active Directory forests that have multiple domains.
In these cases, the global catalog server responds to requests using TCP port 3268 (insecure) and TCP port 3269 (secure).
The preceding steps enable a domain controller to be a global catalog server.