ID: INFO-15

Title: Unidentified service listening on all interfaces (port 20005)

Severity: Informational

CVSS Score: -

CVSS Vector String: -

Description: An unidentified service was foudn to be listening on TCP port 20005 across all network interfaces. Neither nmap nor direct netcat connection attempts were able to identify the service, as it does not respond to arbitrary input. The service may require a proprietary protocol or specific handshake. Without confirmation of the service’s purpose, its exposure on all interfaces cannot be assessed further.

Remediation: Identify and document all listening services. If port 20005 corresponds to an internal management or diagnostic service, restrict it to the loopback or LAN interface only.

More information: See System Hardening Analysis chapter.