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  • What Port Number is XXX on?
    The way that most services work under TCP/IP is that the server is configured to use a well known port number and the client connects from a random high port. ...
  • WiFi Signal Strength Meter
    Windows and other operating systems have a WiFi signal strength meter, but this is usually basic software and does not really tell the user much about the wirel...
  • Auditing Security Events
    An Overview of Auditing Auditing enables you to determine which activities are occurring on your system. Through auditing, you can track access to objects, fil...
  • How to Defeat Caller-ID Blocking
    One trick to defeat Caller-ID blocking is to forward your phone line to a friend who lives in another LATA. When your friend receives the anonymous phone call, ...
  • Race Condition
    A race condition occurs when multiple processes access and manipulate the same data concurrently, and the outcome of the execution depends on the particular ord...
  • What is Twitter and How Does It Work?
    Twitter is a social networking site that relies on micro-blogging for communication. By typing short, 140 character messages users can communicate with their fo...
  • How to Block Incoming Calls
    Blocking incoming calls can sometimes be quite important for many reasons. Someone may be troubling you over the phone, harassing you, giving blank calls and yo...
  • 3D Accelerator
    The 3D Accelerator is a type of graphics board that can be installed into a computer. A person who does so would be installing this board to speed up the time...
  • Implementing Public Key Infrastructure
    An Overview on the Public Key Infrastructure (PKI) A set of components, standards, and protocols make up the Public Key Infrastructure (PKI), which protects ...
  • How to Convert Lotus 123 to Excel
    Lotus 123 was a spreadsheet software that the Lotus Development Corporation, now a subsidiary of IBM, created. It was popular in the 1980s and 1990s. Lotus 123 ...