August 2003
Intermediate to advanced
270 pages
10h 9m
English
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Protecting a Unix KDC
First, choose a Unix operating system that you are intimately familiar with. Good selections for a dedicated KDC machine include the free Unix systems, such as FreeBSD, OpenBSD, and Linux. These operating systems can be downloaded for free, include full source code, and are well supported by the online community, which addresses security issues quickly. Other Unix operating systems such as Solaris are also good choices, but more care must be taken in preparing commercial operating systems, as they usually ship with more network services enabled by default.
When installing the operating system, choose the smallest distribution of software possible. Since there will not be any users directly logging into this machine’s console, do not install X Window System servers or clients, or desktop environments such as CDE, Gnome, and KDE. The only optional component that should be installed is a C compiler to compile the KDC software, if you are going to use one of the open source Kerberos implementations.
After operating system installation, download and install all recommended security patches applicable to your operating system.
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