Port 502 is typically used for Modbus, which is a communication protocol commonly used in industrial automation and control systems. It enables communication between various devices, such as programmable logic controllers (PLCs) and sensors.
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 |
Port 502 |
tcp |
asa-appl-proto |
asa-appl-proto |
WELL KNOWN PORT |
Port 502 |
udp |
asa-appl-proto |
asa-appl-proto |
WELL KNOWN PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |
Port 502 | asa-appl-proto, Protocol | |
Port 502 | Modbus, Protocol |