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Descubre un mundo infinito de historias

Escucha y lee

Michael W Lucas

Online Backup you can Trust and Verify!

Tarsnap, the secure online backup service for Unix-like systems, raised the bar for online backups. It’s inexpensive. It’s reliable. And you don’t need to trust the Tarsnap service—they can’t access your backups even if they wanted to.

With Tarsnap Mastery you’ll learn to:

• install and manage Tarsnap on Linux, Unix, Windows, and OS X
• fully exploit features like encryption and deduplication
• create and recover archives
• customize backups to precisely your requirements
• passphrase protect keys
• create and manage special-purpose keys
• automatically back up and rotate archives
• understand and resolve performance issues
• quickly restore complete systems

Ditch the tape room. Put your backups online, and know that they’re safe.

Tarsnap Mastery. Because life doesn’t back itself up.

Tilted Windmill Press

IT Mastery

Tarsnap Mastery: Online Backups for the Truly Paranoid

“I think we’re gonna need a bigger web server.”

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.

Until now.

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!

Relayd and Httpd Mastery

“One of the best technical writers in the networking and security environments.” – Midwest Book Review

Secure Shell (SSH) lets sysadmins securely manage remote systems. It’s powerful, complicated, and confusing.

Lose the confusion.

SSH Mastery 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!

SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys

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 Mastery

“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!

Ed Mastery: the Standard Unix Text Editor

SNMP

Simple Network Management Protocol

 

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

SNMPv3

efficient queries

debugging

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!

SNMP Mastery

Transport Layer Security, or TLS, makes ecommerce and online banking possible. It protects your passwords and your privacy. Let’s Encrypt transformed TLS from an expensive tool to a free one. TLS understanding and debugging is an essential sysadmin skill you must have.

TLS Mastery takes you through:

-How TLS works

-What TLS provides, and what it doesn’t

-Wrapping unencrypted connections inside TLS

-Assessing TLS configurations

-The Automated Certificate Management Environment (ACME) protocol

-Using Let’s Encrypt to automatically maintain TLS certificates

-Online Certificate Status Protocol

-Certificate Revocation

-CAA, HSTS, and Certificate Transparency

-Why you shouldn’t run your own CA, and how to do it anyway

-and more!

Stop wandering blindly around TLS. Master the protocol with TLS Mastery!

TLS Mastery (Beastie Edition)

TLS Mastery (Tux Edition)

DNS

The world’s most successful distributed database—and the most naïve.

The Domain Name System is one of the Internet’s oldest protocols, designed for a network without hostile users. Intruders targeting a network start by investigating their DNS. DNS Security Extensions, or DNSSEC, hardens DNS and brings it into the 21st century. Learning DNSSEC required wading through years of obsolete tutorials, dead ends, and inscrutable standards.

Until now.

This new edition of DNSSEC Mastery will have DNS administrators deploying DNSSEC with industry-standard software in hours instead of weeks. You will:

-Understand what DNSSEC provides

-Configure your servers to resist attack

-Verify your environment supports modern DNS

-Debug DNSSEC and the Chain of Trust

-Sign your zones and attach them to the Chain of Trust

-Conceal zone data with NSEC3

-Automate DNSSEC maintenance

-Roll over keys to maintain integrity

-Implement DNSSEC on private networks

-Securely distribute security-critical information via DNS

And more! DNSSEC Mastery transforms DNS from a headache to a solution.

DNSSEC Mastery: 2nd edition

"Many users assume that their advanced filesystem is better than UFS because they have so many features—snapshots, checksums, compression, sophisticated caching algorithms, and so on—while all UFS has ever done is muck about putting data on disk. But, conversely, UFS users believe their filesystem is better for exactly the same reasons."

—Hitchhikers Guide to OpenBSD

Disk management is the core of system administration. Nobody can tell you how large that database is going to grow or how many files that archive must eventually support, but for everything else there’s OpenBSD Mastery: Filesystems. This guide takes you through the latest in OpenBSD storage management, including:

* OpenBSD’s cross-platform storage stack

* MBR, GPT, and disklabel partitions

* The Unix File System

* Growing, removing, and repairing filesystems

* Memory file systems

* The Buffer Cache

* Why you need swap, and how to live with it

* Coping with FAT, NTFS, EXT, and more

* The Network File System

* iSCSI

* Software RAID

* Encrypted filesystems

* Encrypted installs

And more! Partition yourself for success and grab OpenBSD Mastery: Filesystems now.