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PortScan 2.04, published by the sz development, is a lightweight network discovery utility designed to locate every active device on a local or remote subnet and enumerate their open TCP/UDP ports. By sending targeted probes to each address in a user-supplied range, the application quickly compiles a live map of the environment, making it suitable for administrators who need to verify inventory, check for unexpected services, or prepare documentation before an audit. The program goes beyond a simple port listing: when it encounters open ports it runs built-in inspectors that pull banner text, service version strings, and configuration clues for HTTP, FTP, SMTP, SNMP, and SMB listeners, giving a concise yet detailed snapshot of what each host is offering. Because the scanner operates from a regular Windows workstation without requiring server-side agents, it can be deployed spontaneously for troubleshooting, penetration-testing reconnaissance, or simply confirming that a newly installed firewall rule is blocking traffic as intended. Three successive releases have refined the discovery engine and expanded the service fingerprint database, culminating in the current 2.04 build that remains compatible with every supported Windows edition while keeping memory usage minimal. Network utilities such as PortScan are commonly grouped in the Network Administration category, where speed, accuracy, and unobtrusive operation are valued. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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