Configuring Wireless Networking on MAC OS X

Mac OS X calls it's wireless network Airport. A typical MAC computer weather be a MacBook or a iMac, Mac Mini or Mac Pro, will generally have an Ethernet port, and have a built in Airport (wireless) port. There are several application tools that are useful when setting up and maintaining network connectivity.

  • System Preferences
  • Network Utility
  • Teminal

Systems Preferences is located in the Applications folder, and Network Tools and Terminal are in the utilities folder under applications. From any Finder window [⇧ + ⌘ + U] or [shift + cmd + U] takes you straight to the Utilities folder. The quickest way to get to System Preferences is to click on the apple logo  (top left) and choose "System Preferences..." option.

Notice that there is padlock icon bottom Left. If this is shown locked as illustrated, then you need to provide the root password, to unlock it. When MAC OS X was first installed the first user created (most cases only user), becomes the root user. This password is then requested when ever you wish to make system changes or preform system wide commands. In the event that the end user forgets this password, it can be reset by booting up the system with the master DVD that came came with the system. A process of reseting the password is then followed. Not shown here.

Setting TCP/IP to use DHCP

Once you have clicked the padlock icon and entered the root password you can then change networking settings. Click the Advanced button shown bottom right. This will open up the networking settings window, click TCP/IP then set the IPv4 Setting to DHCP, if necessary then click renew lease button to retrieve an IP address from the server (router). When don the only other thing that may have to be done is to configure the proxies settings, this is done from System Preferences and Network rather than from the Web browser.

Click on the proxies button and tick the web proxy this allows you to fill in the details of the proxy server and port it is running on. Click OK when finished.