Download popular Microsoft security utility tools here, including Netcat, John the Ripper, Nmap and WSUS.
Download Netcat utility
This Netcat download, written by Hobbit, is a networking utility for Windows that reads and writes data across network connections using the TCP/IP protocol.
Download John the Ripper
The John the Ripper download, written by Openwall.com and used by network administrators, is a fast password cracker program. It's currently available for 11different Unix systems, DOS, Win32, BeOS and OpenVMS.
Download WSUS utility
The Microsoft Windows Server Update Services (WSUS) download enables IT administrators to deploy the latest Microsoft product updates to Microsoft Windows Server 2000, Windows Server 2003 and Windows XP operating systems.
This Nmap download ("Network Mapper") is a free open source utility tool for Windows security scanning. It was designed to rapidly scan large networks, although it works against single hosts.
For a complete list of downloads available, please visit our Windows IT Security Downloads page.