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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!
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!
Secure Shell (SSH) lets sysadmins securely manage remote systems. It’s powerful, complicated, and confusing.
Lose the confusion.
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys rescues you from sifting through decades of obsolete online tutorials and quickly makes you an SSH journeyman. You’ll learn to
• eliminate passwords
• manage access by users, groups, addresses, and more
• securely move files around your network
• forward graphic displays
• proxy TCP connections
• build SOCKS proxies
• centrally manage and distribute keys and configurations
• use SSH as secure transport for other applications
• build virtual private networks
• create Certificate Authorities for truly large scale deployment
Master Secure Shell with SSH Mastery!
If basic TCP/IP was hard, network administrators couldn’t do it. Servers give sysadmins a incredible visibility into the network—once they know how to unlock it.
Most sysadmins don’t need to understand window scaling, or the differences between IPv4 and IPv6 echo requests, or other intricacies of the TCP/IP protocols. You need only enough to deploy your own applications and get easy support from the network team.
This book teaches you:
•How modern networks really work
•The essentials of TCP/IP
•The next-generation protocol, IPv6
•The right tools to diagnose network problems, and how to use them
•Troubleshooting everything from the physical wire to DNS
•How to see the traffic you send and receive
•How to communicate with your network team to quickly resolve problems
A systems administrator doesn’t need to know the innards of TCP/IP, but knowing enough to diagnose your own network issues transforms a good sysadmin into a great one.
OpenBSD has a solid reputation for security and stability. It’s well known for the OpenSMTPd mail server, the LibreSSL cryptography library, and the PF packet filter. But nobody ever talks about the load balancer, or the web server.
The httpd web server provides a fast, stable, secure environment for your web applications. The relayd load balancer lets you distribute Internet application load across multiple hosts. Between the two, you can slash hundreds of thousands of dollars off the cost of building, deploying, and managing applications.
With Httpd and Relayd Mastery you’ll learn how to:
• set up web sites
• configure software to run in a chroot
• run dozens or hundreds of sites on one host
• dynamically reconfigure sites with Lua patterns
• manage site logs
• maintain free, globally-valid SSL certificates
• improve performance with SSL stapling
• install and maintain two-server clusters
• distribute traffic between any number of hosts
• stop worrying about old SSL versions and bad crypto algorithms
Slash the amount of time you spend futzing with web servers. Get Httpd and Relayd Mastery today!
FreeBSD is the muscle behind companies like Netflix and EMC. Any place where someone does heavy lifting on the Internet, you'll find FreeBSD. This newly revised edition of Absolute FreeBSD brings FreeBSD's strengths to bear on your problems and covers FreeBSD's newest features, all in the inimitable style that has made author Michael W. Lucas' system administration books so popular.
Any computer system is only as good as the system administrator's knowledge. Absolute FreeBSD teaches you everything you need to know about managing FreeBSD systems, from installation, configuration, and taking the system from "just working" to "working well." A cohesive focus on service delivery and best practice means that you can apply much of the book to other operating systems.
Absolute FreeBSD dives deep into server management, taking you beyond just making things work and into understanding why they work.
• How to best install FreeBSD to meet your needs
• Which filesystem to use in your environment
• How to back up and restore critical data
• How to tweak the kernel, and when not to
• Network configuration, from activating interfaces to selecting congestion control algorithms
• How to manage UFS, ZFS, and other critical filesystems
• FreeBSD's software packaging system, including how to build your own package repository
• How and when to upgrade
• Techniques to build your own FreeBSD
• Advanced security features like blacklistd and packet filtering
• How to monitor and adjust performance
• Container-style virtualization with jails
• Diskless systems
• Panic management and bug reporting
With Absolute FreeBSD you will get the solid introduction you need; and if you're a fan of the earlier editions, you will expand your skills even further.
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:
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.
Four lies in one acronym?
It’s baroque. It’s arcane. And it’s everywhere.
SNMP is one of those system management skills that people acquire by experience, stumbling through one horrid implementation after another and counting their knowledge by their scars. SNMP Mastery is your guide to the secret landscape of one of computing’s most mysterious tools.
You will understand:
- What makes SNMP simple
- When to use SNMP, and when not to
- How to use SNMP securely
- Objects, MIBs, and OIDs
- using the net-snmp management toolkit
- efficient queries
- proxies, SMUX, and AgentX
- View-based Access Control Model (VACM)
- extending the net-snmp agent
- logging, traps, and notifications
Stop stumbling through the SNMP minefield. Read SNMP Mastery today!
Jails are FreeBSD’s most legendary feature: known to be powerful, tricky to master, and cloaked in decades of dubious lore. Deploying jails calls upon every sysadmin skill you have, and more—but unleashing lightweight virtualization is so worth it.
FreeBSD Mastery: Jails cuts through the clutter to expose the inner mechanisms of jails and unleash their power in your service.
•Understand how jails achieve lightweight virtualization
•Understand the base system’s jail tools and the iocage toolkit
•Optimally configure jail hardware
•Manage jails from the host and from within the jail
•Optimize disk space usage to support hundreds or thousands of jails
•Comfortably work within the limits of jails
•Implement fine-grained control of jail features
•Build virtual networks
•Deploy hierarchical jails
•Constrain jail resource usage
Strip away the mystery. Read FreeBSD Mastery: Jails today!“
This is the sequel to Git Commit Murder, right ?” /phk, creator of the jail system
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
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.
50% John McClane
50% Robin Hood
Reeling from the death of her lover and partner, freelance “exfiltration specialist” Billie Carrie Salton breaks into a high-tech, high-security biotechnology firm to steal their sickle cell anemia cure and broadcast it to the world.
In, out, announce. Easy.
Except Salton’s life never works that smoothly...