CHART 6a: Outstations using Network Communications

Further Information

Windows DNS and its use of random UDP ports to help ensure system security, see:

• http://www.microsoft.com/technet/security/bulletin/ms08-037.mspx
• http://support.microsoft.com/kb/953230

Network diagnostic tools: We recommend using tools such as the Microsoft® Windows® netstat command line tool, or a third-party tool such as Microsoft® Sysinternals™TCPView.