After giving us a background of network security, the book moves on to explain the basic technologies we will work with, namely netfilter, iproute2, NAT and l7-filter. These form the crux of building Linux firewalls and QOS. The later part of the book covers 5 real-world networks for which we design the security policies, build the firewall, setup the script, and verify our installation. These comprehensive set of set up scripts and set up guidelines to create firewall protection for various specific usage scenarios are unique and set this book apart.

The OpenBSD PF Packet Filter Book covers PF on the NetBSD, FreeBSD, DragonFly and OpenBSD platforms. It is an expanded and improved version of the PF FAQ with sections covering Spamd and configuring and using PF on NetBSD, FreeBSD, DragonFly and OpenBSD. The cross-referenced and indexed book also covers quality of service and ALTQ, load balancing, FTP proxying, stateful packet filtering, network address translation (NAT), port forwarding, passive operating system fingerprinting, and redundant firewalls (using pfsync and CARP). The OpenBSD PF Packet Filter Book includes several examples and rulesets.

This unique and valuable collection of tips, tools, and scripts provides clear, concise, hands-on solutions that can be applied to the challenges facing anyone running a network of Linux servers from small networks to large data centers in the practical and popular problem-solution-discussion O'Reilly cookbook format.

The "Linux Cookbook" covers everything you'd expect: backups, new users, and the like. But it also covers the non-obvious information that is often ignored in other books the time-sinks and headaches that are a real part of an administrator's job, such as: dealing with odd kinds of devices that Linux historically hasn't supported well, building multi-boot systems, and handling things like video and audio.

The knowledge needed to install, deploy, and maintain Linux is not easily found, and no Linux distribution gets it just right. Scattered information can be found in a pile of man pages, texinfo files, and source code comments, but the best source of information is the experts themselves who built up a working knowledge of managing Linux systems. This cookbook's proven techniques distill years of hard-won experience into practical cut-and-paste solutions to everyday Linux dilemmas.

Use just one recipe from this varied collection of real-world solutions, and the hours of tedious trial-and-error saved will more than pay for the cost of the book. But those who prefer to learn hands-on will find that this cookbook not only solves immediate problems quickly, it also cuts right to the chase pointing out potential pitfalls and illustrating tested practices that can be applied to a myriad of other situations.

Whether you're responsible for a small Linux system, ahuge corporate system, or a mixed Linux/Windows/MacOS network, you'll find valuable, to-the-point, practical recipes for dealing with Linux systems everyday. The "Linux Cookbook" is more than a time-saver; it's a sanity saver.

The Linux desktop is rapidly gaining as an alternative to Windows. IDC estimates that Linux has now surpassed Apple with 3% of the desktop market, and that this number will double by 2006. And the new desktop users are not just students curious about a free operating system, but working professionals who are familiar with Windows and who find themselves needing to come up-to-speed quickly on Linux. They need to quickly masters the Linux equivalents of Outlook, Microsoft Office, and Internet Explorer. They need to understand how to customize their Linux desktops so that they can be as productive as possible. And they need to do all of this quickly. They need Spring Into Linux. Written in the unique "Spring Into" style, this book is organized as a series of one-page and two-page tutorials. Written for professionals who don't need a lot of hand-holding, the information is quite dense. Each tutorial contains at least one example of the concept or procedure being described, with plenty of supporting screenshots.

Over the last few years, Linux has grown both as an operating system and a tool for personal and business use. Simultaneously becoming more user friendly and more powerful as a back-end system, Linux has achieved new plateaus: the newer filesystems have solidified, new commands and tools have appeared and become standard, and the desktop--including new desktop environments--have proved to be viable, stable, and readily accessible to even those who don't consider themselves computer gurus.

Whether you're using Linux for personal software projects, for a small office or home office (often termed the SOHO environment), to provide services to a small group of colleagues, or to administer a site responsible for millions of email and web connections each day, you need quick access to information on a wide range of tools. This book covers all aspects of administering and making effective use of Linux systems. Among its topics are booting, package management, and revision control. But foremost in "Linux in a Nutshell" are the utilities and commands that make Linux one of the most powerful and flexible systems available.

Now in its fifth edition, "Linux in a Nutshell" brings users up-to-date with the current state of Linux. Considered by many to be the most complete and authoritative command reference for Linux available, the book covers all substantial user, programming, administration, and networking commands for the most common Linux distributions.

Comprehensive but concise, the fifth edition has been updated to cover new features of major Linux distributions. Configuration information for the rapidly growing commercial network services and community update services isone of the subjects covered for the first time.

But that's just the beginning. The book covers editors, shells, and LILO and GRUB boot options. There's also coverage of Apache, Samba, Postfix, sendmail, CVS, Subversion, Emacs, vi, sed, gawk, and much more. Everything that system administrators, developers, and power users need to know about Linux is referenced here, and they will turn to this book again and again.

Essential Skills Made Easy!

Learn the fundamentals of UNIX administration--from both a network and single system perspective--using this easy-to-follow introductory guide. You'll find clear instructions for setting up such important system services sas DNS, FTP, file systems, basic security tools, and much more. Designed for easy learning, this book walks you through each step of key processes--from installation to using TCP/IP tools and network and system management. Also, the book reviews SNMP and related tools. Organized by topic and filled with step-by-step exercises, tips, and quizzes, this book is an ideal starting point on the path to becoming a successful system administrator.

This Beginner's Guide is Designed for Easy Learning: Modules--Each concept is divided into logically organized modules (chapters), ideal for self-paced learning Critical Skills--Each module opens with the specific skills covered in the module Ask the Experts--Q&A sections throughout are filled with bonus information and helpful tips 1-Minute Drills--Quick self-assessment sections check your progress Mastery Checks--End-of-module reviews test knowledge using short-answer, multiple-choice, and fill-in-the-blank questions Projects--Practical exercises show how to apply the critical skills learned in each module Blueprints--Key networking configurations are illustrated in detail

This compact and pracxtice oriented text provides a clear insight into understanding the operation of UNIX systems. It covers the various features of UNIX s as an operating system and clssifies th entire UNIX commands into 15 categories.

Your On-the-Job Quick Reference

Carry essential Red Hat Linux administration and troubleshooting information right in your back pocket so you can handle a wide variety of tasks on-the-spot. This handy resource covers key management topics, with an emphasis on system administration, and gives you quick solutions in an easy-to-find format. Don't leave your desk without it!

Get details on: Managing and securing users and groups Installing software and building RPM packages Using the Filesystem Hierarchy Standard (FHS) Mounting, formatting, and configuring file systems Managing multiple hard disks with RAID and LVM Device files and modules Print servers (CUPS and LPRng) Kernel administration Scheduling tasks and managing services

Configure, customize, and administer AIX version 5L effectively using this expert resource. Use system management tools, work with network and distributed file systems, manage the user environment, tune and monitor the system, and much more.

This is a guide to understanding earning potential, and benefiting from Linux-related certifications. It features: a discussion of opportunities for Linux certified professionals; job market and financial benefits; and inside perspectives from certified professionals.

Tru64 UNIX System Administrator's Guide is an indispensable aid for Tru64 UNIX system administrators. Its clear explanations and practical, step-by-step instructions are invaluable to both new and experienced administrators dealing with the latest UNIX operating systems. Several top Compaq employees from their Tru64 UNIX group co-authored this revision and reveal their most useful shortcuts and "how-tos" as well as pointing out pitfalls to be avoided. The material included in its pages can't be found in any other publication.
The Digital Press title Tru64 UNIX File System Administration Handbook by Steve Hancock offers complementary coverage for Compaq's UNIX users.

This is the only book available for Tru64 UNIX system administrators. It provides practical, step-by-step tutelage to system administrators dealing with the latest (version 5.1) UNIX operating systems. Several top Compaq employees from their Tru64 UNIX group co-authored this book and added their expertise and experience to the material included in its pages. The Digital Press title Tru64 UNIX File System Administration Handbook by Steve Hancock offers complementary coverage for Compaq's UNIX users.
New edition of Cheek's best-selling Digital UNIX System Administrator's Guide
Covers Version 5.1
Authored by a team of specialists

-- Growing market -- According to the Bureau of Labor Statistics, the number of computer technology jobs will increase at a rate of approximately 35% annually in the next five years
-- Linux popularity -- In 1999 there were over 15 million Linux users. New programmers and those new to Linux need a current tutorial on Linux programming.
-- Industry support -- from companies such as IBM, Compaq, Intel. HP and Dell are investing in Linux and partnering with leading distributors.
-- Complements strong selling programming titles -- including Linux: The Complete Reference, 3rd Edition, (19,000 copies sold) which focuses on system administration and management.
-- Unique and thorough coverage -- Treats Linux as a platform for a variety of different programming languages, tools, and libraries, each with their own capabilities.

This guide provides a complete overview of all facets of Unix backup and recovery and offers practical, affordable backup and recovery solutions for environments of all sizes and budgets. It explains everything from freely available backup systems to large-scale commercial utilities.

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. Gain Essential Linux Administration Skills Easily Effectively set up and manage popular Linux distributions on individual servers and build entire network infrastructures using this practical resource. Fully updated to cover the latest tools and techniques, Linux Administration: A Beginner's Guide, Eighth Edition features clear explanations, step-by-step instructions, and real-world examples. Find out how to configure hardware and software, work from the command line or GUI, maintain Internet and network services, and secure your data. Performance tuning, virtualization, containers, software management, security, and backup solutions are covered in detail. Install and configure Linux, including the latest distributions from Fedora, Ubuntu, CentOS, openSUSE, Debian, and RHEL.Set up and administer core system services, daemons, users, and groups.Manage software applications from source code or binary packages.Customize, build, or patch the Linux kernel.Understand and manage the Linux network stack and networking protocols, including TCP/IP, ARP, IPv4, and IPv6.Minimize security threats and build reliable firewalls and routers with Netfilter (iptables and nftables) and Linux.Create and maintain DNS, FTP, web, e-mail, print, LDAP, VoIP, and SSH servers and services.Share resources using GlusterFS, NFS, and Samba.Spin-up and manage Linux-based servers in popular cloud environments, such as OpenStack, AWS, Azure, Linode, and GCE.Explore virtualization and container technologies using KVM, Docker, Kubernetes, and Open Container Initiative (OCI) tooling.Download specially curated Virtual Machine image and containers that replicate various exercises, software, servers, commands, and concepts covered in the book. Wale Soyinka is a father, system administrator, a DevOps/SecOps aficionado, an open source evangelist, a hacker, and a well-respected world-renowned chef (in his mind). He is the author of Advanced Linux Administration as well as other Linux, Network, and Windows administration training materials.

Unlike some operating systems, Linux doesn't try to hide the important bits from you; it gives you full control of your computer. You'll find that there are many ways to tweak the system to your liking, but there are also a few pitfalls. To truly master Linux and avoid obstacles, you need to understand Linux internals like how the system boots, how networking works, and what the kernel actually does.

In this completely revised second edition of the perennial bestseller How Linux Works, author Brian Ward makes the concepts behind Linux internals accessible to anyone who wants to understand the inner workings of the operating system. Inside these information-packed pages, you'll find the kind of knowledge that normally comes from years of experience doing things the hard way, including essential topics like: How Linux boots, with coverage of boot loaders and init (systemd, Upstart, and System V)How the kernel manages devices, device drivers, and processesHow networking, interfaces, firewalls, and servers workHow development tools and shared libraries workHow shell scripts workYou'll explore the kernel, with coverage of system calls, input and output, and file systems, and examine key systems tasks inside user space. With its combination of background, theory, real-world examples, and patient explanations, How Linux Works, 2nd Edition will teach you what you need to know to understand and customize your system, solve pesky problems, and take control of your operating system.

Transition to Microservices and DevOps to Transform Your Software Development Effectiveness Thanks to the tech sector's latest game-changing innovations-the Internet of Things (IoT), software-enabled networking, and software as a service (SaaS), to name a few-there is now a seemingly insatiable demand for platforms and architectures that can improve the process of application development and deployment. In Microservices and Containers, longtime systems architect and engineering team leader Parminder Kocher analyzes two of the hottest new technology trends: microservices and containers. Together, as Kocher demonstrates, microservices and Docker containers can bring unprecedented agility and scalability to application development and deployment, especially in large, complex projects where speed is crucial but small errors can be disastrous. Learn how to leverage microservices and Docker to drive modular architectural design, on-demand scalability, application performance and reliability, time-to-market, code reuse, and exponential improvements in DevOps effectiveness. Kocher offers detailed guidance and a complete roadmap for transitioning from monolithic architectures, as well as an in-depth case study that walks the reader through the migration of an enterprise-class SOA system. Understand how microservices enable you to organize applications into standalone components that are easier to manage, update, and scale Decide whether microservices and containers are worth your investment, and manage the organizational learning curve associated with them Apply best practices for interprocess communication among microservices Migrate monolithic systems in an orderly fashion Understand Docker containers, installation, and interfaces Network, orchestrate, and manage Docker containers effectively Use Docker to maximize scalability in microservices-based applications Apply your learning with an in-depth, hands-on case study Whether you are a software architect/developer or systems professional looking to move on from older approaches or a manager trying to maximize the business value of these technologies, Microservices and Containers will be an invaluable addition to your library. Register your product at informit.com/register for convenient access to downloads, updates, and/or corrections as they become available.

Beginning Linux Programming 4th Edition

Building on the success of its previous editions, this must-have guide continues its popular tutorial approach and brings you a straightforward introduction to developing programs for Linux and other UNIX-style operating systems. The author duo of experienced Linux programmers covers a wide range of topics to help you learn more about what Linux has to offer so you can maximize your programming time and your use of the Linux system.

You'll progress from the basics of compiling programs, linking to libraries, and dealing with terminal input and output to more advanced subjects such as writing applications for the GNOME(R) and KDE(R) environments, storing data using MySQL(R), and debugging. As each topic is covered, the authors introduce an appropriate programming theory and then illustrate it with practical examples, clear explanations, and a step-by-step approach with the intent that you will learn by doing. You'll quickly evolve from being a Linux beginner to confidently creating custom applications in Linux.

What you will learn from this book

How to use the standard Linux C libraries and other facilities

Ways to make the most of the standard Linux development tools

Tips on basic system calls, file I/O, interprocess communication, and shell programming

How to build graphical user interfaces using the GTK+ or Qt toolkits

Using sockets to support TCP/IP networking to different machines

How to write programs that will work on different distributions of Linux

Who this book is for
This book is for programmers and developers who want to increase their skill level using Linux. Experience in C and/or C++programming is helpful.

Wrox Beginning guides are crafted to make learning programming languages and technologies easier than you think, providing a structured, tutorial format that will guide you through all the techniques involved.