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Mac OS X Security by Wotring, Brian; Norvell, Preston; Potter, Bruce

By Wotring, Brian; Norvell, Preston; Potter, Bruce

Mac OS X now operates on a UNIX engine. As such it truly is even more robust than earlier working structures. it's now a multitasking, multithreaded, multi-user, and multiprocessor process with more advantageous interoperability with different platforms. in addition to that elevated strength comes elevated safeguard vulnerability. half I introduces readers to the fundamentals of OS X protection. half II addresses approach defense starting on the customer computer point. This part addresses UNIX-specific details corresponding to permissions, executables, and community protocols and the comparable defense issues. half III covers community safety. The chapters during this part will hide safety for web providers, dossier sharing, and community security platforms. half IV addresses company safeguard utilizing quite a few instruments (Kerberos, NetInfo, and Rendezvous) in addition to computing device configurations to demonstrate how OS X Server and OS X inter-operate. the ultimate part addresses auditing and forensics and what to do whilst an OS X community is compromised. This part teaches readers to audit platforms painlessly and successfully and the way to enquire and deal with incidents.

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On Mac OS X Server, the user created during the installation is also an admin user. However, the password given during the creation of that administrative account is also the initial password of the root account. That is, the root account has a password and is enabled. Likewise, it is recommended that the root password be changed so that it is not the same as the admin account, and then disabled. By default, all members of the admin group are given sudo access. In keeping with the spirit of only allowing access as needed, it is recommended that the sudo privileges be allowed only to a single admin user.

This is followed by configuration of the various ethernet ports on the system, starting with the network protocols that will be used on each (TCP/IP and AppleTalk). Administrators should choose only the protocols they will be using on their network. Most modern networks require TCP/IP, which is enabled on all interfaces by default. AppleTalk is a protocol used to support some legacy systems (including older Macs and printers). AppleTalk is not enabled by default. Next comes configuration of the individual interfaces for IP for those ethernet ports selected to run TCP/IP.

And for us, this path begins at installation. It may seem that the installation process would be an area where one wouldn't really have to think about security. So much of an administrator's time and emphasis in securing a host is done after an operating system is installed, that many forget the choices to be made during installation. This chapter discusses the decision points encountered during the install procedure, and provides some additional background on some of the particulars. The first two sections cover the BSD Subsystem and choosing a filesystem format.

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