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low·Information Scans·Updated Sep 18, 2025

Nucleus FTP Service Detection Scanner

This scanner detects the use of Nucleus FTP Service in digital assets. It aids in identifying the presence of the service to assist in security assessments.

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, subdomain, ipv4
CostFree
2k
Times Used
continuous scan runs
6.4k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
Detail

The Nucleus FTP Service is primarily used by organizations managing file transfers across networks securely. It is widely deployed in corporate environments where data exchange via FTP protocol is prevalent. System administrators and IT security teams rely on detecting such services for mapping and securing network resources. It assists in monitoring network assets that are exposed to external or internal networks. This service is integral in managing large file exchanges and backups. Prior identification of such services is essential for comprehensive security auditing and to avoid unauthorized access.

The scanner specializes in detecting the presence of the Nucleus FTP Service on a network. By identifying such services, it helps security teams evaluate and secure potentially vulnerable points of entry. Detection is facilitated through network communication on the designated FTP port. This detection allows administrators to take preventive actions against potential unauthorized access. Understanding service deployment assists in managing system security and ensuring no unmanaged or legacy software is unintentionally left exposed. Detection acts as a primary step to managing larger assets and curtailing potential threats.

The detection operates by sending specific hex data to the FTP port 21, which is standard for FTP communications, and awaiting specific word responses. Technical details involve matching server responses against predefined words like "Nucleus FTP Server". The scanner confirms the presence of the service by comparing the server's response with known markers of the Nucleus service. Additionally, it can extract the version information if included in the response. This process assists in automatic asset inventory and security evaluations.

Exploiting exposure can lead to unauthorized access, data exfiltration, or service disruption. Malicious entities can leverage unidentified open FTP services as entry points to internal systems. Possible effects include data breaches, permission audit bypassing, or infrastructure manipulation. Poorly monitored FTP services may expose sensitive files or configurations. This detection helps preemptively secure systems by flagging unmonitored or unauthorized FTP services. Identification and correction reduce the risk of data theft and network compromise.

Solution Advice
  • Regularly scan and audit network services to identify unauthorized or outdated software.
  • Immediately update or decommission unsupported FTP services found on the network.
  • Implement strict access controls and monitoring for all FTP services.
  • Consider transitioning to more secure protocols such as SFTP or FTPS.
  • Ensure appropriate firewall rules restrict access to FTP services to only necessary parties.

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