Port 4993

Port 4993 is generally used as a communication channel for certain applications or services. One of the common uses of port 4993 is for Cisco Secure Access Control System (ACS) Radius Change of Authorization (CoA) operations. These CoA operations are involved in modifying user access policies and related attributes in real-time. Additionally, the port can be used for other purposes depending on the configuration and requirements of the application or service using it.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.


Port Protocol (TCP/UDP) Title Description Port Type


Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
Port 4993 Home FTP Server web Interface Default Port
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