NetPeek USB — Local Network Scanner for Windows & Linux

NetPeek is a portable network analysis tool that runs directly from a USB flash drive, giving you visibility into what is connected to your network and identifying open ports that could represent potential security entry points. No installation required — just plug in, run, and get results. One licence, one USB drive, works on both Windows and Linux.

What is NetPeek?

NetPeek lists every device on your network — IP address, MAC address, hardware vendor and hostname — then flags the open ports on each one and highlights unknown devices worth investigating. It turns a network you cannot see into a clear, readable list in a few clicks.

Because it runs directly from the USB drive, it leaves no trace on the host machine and can be used across different systems without needing to install anything. A single drive and licence key works on both Windows and Linux PCs.

Features

NetPeek packs a full network toolkit onto one USB drive:

• IP subnet scan (CIDR) — Enter any CIDR (e.g. 192.168.1.0/24) or leave blank for your local subnet
• WiFi network scan — See the wireless networks available to you
• Ping any IP — Standard diagnostic to check a device responds
• DNS lookup — Resolve any type of DNS record
• UDP port scan — Check standard UDP ports or one specific port on a device
• Export to CSV — Save scan results to a CSV you can open in any spreadsheet
• Offline vendor lookup — MAC addresses mapped to manufacturers from a bundled database; works with no internet
• One licence, two platforms — The same USB drive runs on Windows 10/11 and Debian-based Linux
• No admin rights required — Reads the OS ARP table after a parallel ping sweep; no raw sockets, no Nmap, no root
• 27 common ports checked on each device by default
• Shipped preloaded on a USB flash drive — nothing to download, nothing to install

Why NetPeek instead of installing scanner tools?

Licence, trial and updates

30-day free trial: NetPeek includes a 30-day free trial built into the drive. Because it is a physical product that ships to you, refunds can be requested within 30 days before the licence is activated — once activated, or 30 days after delivery, it cannot be returned.

Updates: Updates to the version you purchase are included at no extra cost. When you upgrade to the next major version, current licence holders get a discounted upgrade price.

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Works offline: Vendor lookups come from a bundled offline database, so NetPeek can scan and identify devices with no internet connection at all.

Who it is for

NetPeek is designed for IT professionals and network administrators who need quick, portable network diagnostics. It is equally useful for:

• Routine network audits and inventory checks
• Investigating unexpected devices or connections on a network
• Checking for exposed ports before connecting a new machine to a network
• On-site diagnostics where installing software is not practical
• Anyone who wants visibility into their home or small-office network

Pricing and availability

NetPeek USB is available now. Members of the CritchCorp community can purchase a licence for £25* from the membership site. The store lists the regular price at £30.00.

For more information or to purchase:

Product page (cc-computers.com): https://www.cc-computers.com/netpeek-usb-network-scanner-for-linux-and-windows/

Members’ ordering (licence): https://members.cc-computers.com/order-steps/software/77

Store listing: https://store.cc-computers.com/products/netpeek-usb-version

Members’ ordering info: https://members.cc-computers.com/order-steps/software/78

About CritchCorp Computers Ltd

CritchCorp Computers Ltd is a company registered in England and Wales (Company Number 05928822). Along with its retail and wholesale operations, CritchCorp develops and sells practical software tools for IT professionals and everyday users alike. NetPeek USB is part of that software tools range.