Port 843 is used for communication between Adobe Flash Player and the Adobe Flash Media Server. It is used for transmitting policy files that define the permissions for a Flash application to interact with a domain that is different from the one the application resides in.
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.
Official
Port | Protocol (TCP/UDP) | Title | Description | Port Type |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |
Port 843 | Adobe Flash socket policy server |