Data verified May 2026
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s7scan is a tool written in Python that scans networks, enumerates Siemens PLCs, and gathers basic information about them, such as PLC firmware and hardware version, network configuration, and security parameters. It uses the S7 protocol to connect to PLCs, specifically performing 'Read SZL' requests to obtain controller information. The tool can identify active PLCs, retrieve details like PLC type, software and hardware versions, protection settings, and network configuration. It supports both TCP/IP and LLC transport protocols and can be built as a stand-alone binary with pyinstaller. s7scan is based on the 'plcscan' utility by Dmitry Efanov (Positive Research).
s7scan FAQ
Common questions about s7scan including features, pricing, alternatives, and user reviews.
s7scan is A tool for scanning networks, enumerating Siemens PLCs, and gathering detailed information about them. It is a OT Security solution designed to help security teams with Network Discovery, Plc, Network Scanning.
s7scan is a free OT Security tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/klsecservices/s7scan/ for download and installation instructions.
Popular alternatives to s7scan include:
1.Nozomi Networks Nozomi Smart Polling - Active polling add-on for OT/IoT asset discovery and configuration data (Commercial)
2.Armis Threat Detection and Analysis - OT/IoT asset discovery and threat detection platform for industrial environments (Commercial)
3.Armis Centrix™ Medical Device Security - Medical device security platform for healthcare asset visibility & protection (Commercial)
4.Armis Centrix™ for Medical Device Security - Medical device security platform for healthcare asset monitoring & compliance (Commercial)
5.Dragos Platform Asset Visibility - OT asset discovery and inventory platform for industrial environments (Commercial)
Compare all s7scan alternatives at https://cybersectools.com/alternatives/s7scan
s7scan is for security teams and organizations that need Network Discovery, Plc, Network Scanning. It's particularly suitable for small to medium-sized teams looking for cost-effective solutions. Other OT Security tools can be found at https://cybersectools.com/categories/ot-security
Have more questions? Browse our categories or search for specific tools.
