- downloads: http://download.microsoft.com
- update: http://update.microsoft.com
- Windows-update: http://windowsupdate.microsoft.com
- Microsoft-update: http://update.microsoft.com/microsoft
- Office-update: http://office.microsoft.com/en-us/officeupdate/default.aspx

- Microsoft Baseline Security Analyzer: http://www.microsoft.com/technet/security/tools/mbsahome.mspx
- Microsoft TechNet: TCP/IP Fundamentals for Microsoft Windows: http://www.microsoft.com/technet/itsolutions/network/evaluate/technol/tcpipfund/tcpipfund.mspx