Sudo: You’re Doing It Wrong Unix-like operating systems use a rudimentary access control system: the root account can do anything, while other users are peasants with only minimal access. This worked fine in UNIX’s youth, but now that sysadmin responsibilities are spread among many people and applications, many people need a tiny slice of root’s power. Sudo lets you divide root’s monolithic power between the people who need it with accountability and auditability. Sudo Mastery will teach you to: · design a secure sudo policy · simplify policies with lists and aliases · manage shell environments · verify system integrity via intrusion detection · deploy a single sudo policy across your enterprise · manage sudo policies via LDAP · log and debug sudo · record and replay full sudo sessions · use authentication systems other than passwords Master sudo with Sudo Mastery!

Sudo: You're Doing It Wrong Unix-like operating systems use a rudimentary access control system: the root account can do anything, while other users are peasants with only minimal access. This worked fine in UNIX's youth, but now that sysadmin responsibilities are spread among many people and applications, many people need a tiny slice of root's power. Sudo lets you divide root's monolithic power between the people who need it with accountability and auditability. Sudo Mastery will teach you to: design a secure sudo policy simplify policies with lists and aliases manage shell environments verify system integrity via intrusion detection deploy a single sudo policy across your enterprise manage sudo policies via LDAP log and debug sudo record and replay full sudo sessions use authentication systems other than passwords Master sudo with Sudo Mastery!

Pluggable Authentication Modules: Threat or Menace? PAM is one of the most misunderstood parts of systems administration. Many sysadmins live with authentication problems rather than risk making them worse. PAM’s very nature makes it unlike any other Unix access control system. If you have PAM misery or PAM mysteries, you need PAM Mastery! With PAM Mastery, you’ll understand: · the different versions of PAM · the intricacies of Linux-PAM and OpenPAM · how PAM policies make decisions · how to debug PAM · the most frequently seen PAM modules · Linux-PAM extended controls and substacks · time-based one-time passwords · using SSH keys for more than SSH · password quality testing · policies from CentOS, Debian, and FreeBSD · and more! Transform PAM from a headache to an ally with PAM Mastery.

Filesystems for everything! FreeBSD includes many special-purpose filesystems. FreeBSD Mastery: Specialty Filesystems takes you through these filesystems, helping you solve problems you didn’t know you have. These filesystems underlie everything from application servers to jails. You’ll learn to manage: -removable media -MSDOS and Linux filesystems -CD, DVD, and Blu-Ray disks -devfs -process filesystems -the file descriptor filesystem -the POSIX message queue filesystem -union mounts -null mounts -both memory filesystems, and when to use each -NFS versions 2, 3, and 4 -iSCSI targets and initiators -the Common Internet File System -networked disk redundancy with geom_gate and HAST -high availability storage with HAST and iSCSI -NFSv4 Access Control Lists -User Space Filesystems -FreeBSD’s Solaris-compatible automounter System administrators of any expertise level will expand their FreeBSD mastery with FreeBSD Mastery: Specialty Filesystems.

21st-Century Data Storage ZFS, the fast, flexible, self-healing filesystem, revolutionized data storage. Leveraging ZFS changes everything about managing FreeBSD systems. With FreeBSD Mastery: ZFS, you’ll learn to: -understand how your hardware affects ZFS -arrange your storage for optimal performance -configure datasets that match your enterprise’s needs -repair and monitor storage pools -expand your storage -use compression to enhance performance -determine if deduplication is right for your data -understand how copy-on-write changes everything -snapshot filesystems -automatically rotate snapshots -clone filesystems -understand how ZFS uses and manages space -do custom FreeBSD ZFS installs Whether you’re a long-term FreeBSD administrator or a new user, FreeBSD Mastery: ZFS will help you simplify storage. Master ZFS with FreeBSD Mastery: ZFS.

ZFS improves everything about systems administration. Once you peek under the hood, though, ZFS’ bewildering array of knobs and tunables can overwhelm anyone. ZFS experts can make their servers zing—and now you can, too, with FreeBSD Mastery: Advanced ZFS. This small book teaches you to: •Use boot environments to make the riskiest sysadmin tasks boring •Delegate filesystem privileges to users •Containerize ZFS datasets with jails •Quickly and efficiently replicate data between machines •split layers off of mirrors •optimize ZFS block storage •handle large storage arrays •select caching strategies to improve performance •manage next-generation storage hardware •identify and remove bottlenecks •build screaming fast database storage •dive deep into pools, metaslabs, and more! Whether you manage a single small server or international datacenters, simplify your storage with FreeBSD Mastery: Advanced ZFS.

“I’m glad someone’s finally giving ed the attention it deserves.” – Ken Thompson, co-creator of Unix Let me be perfectly clear: ed is the standard Unix text editor. If you don’t know ed, you’re not a real sysadmin. Forty years after ed’s introduction, internationally acclaimed author Michael W Lucas has finally unlocked the mysteries of ed for everyone. With Ed Mastery, you too can become a proper sysadmin. Ed Mastery will help you: · understand buffers and addresses · insert, remove, and mangle text · master file management and shell escapes · comprehend regular expressions, searches, and substitutions · create high-performance scripts for transforming files You must be at least this competent to use this computer. Read Ed Mastery today!