Learn more about TCP and UDP ports used by Apple products, such as Mac OS X, Mac OS X Server, AppleShare IP, Network Assistant, Apple Remote Desktop, Macintosh Manager, and MobileMe. Many of these are referred to as "well known" industry standard ports. Note: Mac OS X v10.5 and later includes the Application Firewall, which is different...

In this advanced article, learn how to capture a packet trace; for example, you may be asked to do this when troubleshooting a network connectivity issue.  These steps use Terminal and the the tcpdump command; if you are not familiar with using the Terminal, you may want to use for third-party software that can perform a packet trace instead....

MacBook Air (Late 2010) and later, MacBook Pro (Early 2011), iMac (Mid 2011), and Mac mini (Mid 2011) computers, as well as OS X Lion, support 32- and 64-bit versions of Windows 7 Home Premium, Windows 7 Professional, or Windows 7 Ultimate....

This document describes the security content of iTunes 10.5....

Learn how to adjust the double-click and scrolling speed of your Magic Trackpad or Magic Mouse with OS X Lion....

Learn how to troubleshoot if Mail unexpectedly quits when viewing a certain message or messages. This can happen if the mail message is malformed or damaged in some way. In certain situations, Mail may unexpectedly quit when attempting to display the message. If you select such a message, Mail may quit each time you open the application....

Learn how to enable Kerberos authentication for shared printers for both Active Directory and Open Directory-based systems....

Learn about the software and hardware requirements for using your Apple Thunderbolt Display (27-inch) with Windows 7 and Boot Camp....

Learn about printing in OS X Lion....

In Mac OS X v10.6.8 and OS X Lion, delays may occur when joining to or authenticating users against an Active Directory domain that ends in ".local"....