AZTCOFW / TECHNICAL GUIDE
FTP Ports
FTP traffic is identified by the use of port 21. Other ports can be used if they added to a comma-separated list in the system tunable debug.pfftpports (e.g. 21,2121,4559)
Imported from the AZTCOFW knowledge base on 2026-09-05. Historical guidance may refer to older software versions. Confirm applicability before changing a production system.
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