Chapter 11. System Administration: Core Concepts

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IN THIS CHAPTER

System Administrator and Superuser

391

Rescue Mode

397

SELinux

400

Red Hat Configuration Tools

415

rpcinfo: Displays Information About portmap

423

The xinetd Superserver

425

TCP Wrappers: Client/Server Security (hosts.allow and hosts.deny)

427

Setting Up a chroot Jail

428

DHCP: Configures Hosts

431

nsswitch.conf: Which Service to Look at First

435

PAM

438

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The job of a system administrator is to keep one or more systems in a useful and convenient state for users. On a Linux system, the administrator and user may both be you, with you and the computer being separated by only a few feet. Or the system administrator may be halfway around the world, supporting a network of systems, with ...

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