There is no standard or common use of this port.
UDP port 23 is traditionally associated with the Telnet protocol, which is known for its lack of security features. In the past, hackers have exploited this port to gain unauthorized access to systems by intercepting unencrypted data that is transmitted over this port. They have also used it to launch Denial of Service (DoS) attacks by flooding the port with traffic, causing the system to become overwhelmed and unresponsive. Additionally, malware such as the Mirai botnet has been known to target devices through this port, using it to spread to other vulnerable devices. Therefore, it is recommended to keep this port closed and secured to prevent potential exploits.
