Mastering Linux Network Administration

Master the skills and techniques that are required to design, deploy, and administer real Linux-based networks
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Mastering Linux Network Administration

Jay LaCroix

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Master the skills and techniques that are required to design, deploy, and administer real Linux-based networks
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Book Details

ISBN 139781784399597
Paperback260 pages

Book Description

Linux is everywhere. Whether you run a home office, a small business, or manage enterprise systems, Linux can empower your network to perform at its very best. Armed with the advanced tools and best practice guidance of this practical guide, you'll be able to mold Linux networks to your will, empowering your systems and their users to take advantage of all that Linux-based networks have to offer.

Understand how Linux networks function and get to grips with essential tips and tricks to manage them - whether you're already managing a networks, or even just starting out. With Debian and CentOS as its source, this book will divulge all the details you need to manage a real Linux-based network. With detailed activities and instructions based on real-world scenarios, this book will be your guide to the exciting world of Linux networking.

Table of Contents

Chapter 1: Setting up Your Environment
Getting started
Distributions to consider
Physical machines versus virtual machines
Setting up and configuring VirtualBox
Acquiring and installing Debian 8
Acquiring and installing CentOS 7
Summary
Chapter 2: Revisiting Linux Network Basics
Understanding the TCP/IP protocol suite
Naming the network device
Understanding Linux hostname resolution
Understanding the net-tools and iproute2 suites
Manually managing network interfaces
Managing connections with Network Manager
Summary
Chapter 3: Communicating Between Nodes via SSH
Using OpenSSH
Installing and configuring OpenSSH
The OpenSSH config file
Understanding and utilizing scp
Generating public keys
Keeping SSH connections alive
Exploring an alternative to SSH – utilizing Mosh (mobile shell)
Summary
Chapter 4: Setting up a File Server
File server considerations
NFS v3 versus NFS v4
Learning the basics of Samba
Mounting network shares
Automatically mounting network shares via fstab and systemd
Creating networked filesystems with SSHFS
Summary
Chapter 5: Monitoring System Resources
Inspecting and managing processes
Understanding load average
Checking available memory
Using shell-based resource monitors
Scanning used storage
Introduction to logging
Maintaining log size with logrotate
Understanding the systemd init system
Understanding the systemd journal
Summary
Chapter 6: Configuring Network Services
Planning your IP address layout
Installing and configuring a DHCP server
Installing and configuring a DNS server
Setting up an internal NTP server
Summary
Chapter 7: Hosting HTTP Content via Apache
Installing Apache
Configuring Apache
Adding modules
Setting up virtual hosts
Summary
Chapter 8: Understanding Advanced Networking Concepts
Dividing your network into subnets
Understanding the CIDR notation
Implementing Quality of Service
Routing TCP/IP traffic
Creating redundant DHCP and DNS servers
Summary
Chapter 9: Securing Your Network
Limiting the attack surface
Securing OpenSSH
Configuring the iptables firewall
Protecting system services with fail2ban
Understanding SELinux
Configuring Apache to utilize SSL
Deploying security updates
Summary
Chapter 10: Troubleshooting Network Issues
Tracing routing issues
Troubleshooting DHCP issues
Troubleshooting DNS issues
Displaying connection statistics with netstat
Scanning your network with Nmap and Zenmap
Installing missing firmware on Debian systems
Troubleshooting issues with Network Manager
Summary

What You Will Learn

  • Install and configure the Debian and CentOS systems
  • Set up and configure file servers
  • Administer networked nodes remotely
  • Discover how to monitor system performance for peak health
  • Configure network services such as DNS and DHCP
  • Host HTTP content via Apache
  • Troubleshoot Linux networking issues

Authors

Table of Contents

Chapter 1: Setting up Your Environment
Getting started
Distributions to consider
Physical machines versus virtual machines
Setting up and configuring VirtualBox
Acquiring and installing Debian 8
Acquiring and installing CentOS 7
Summary
Chapter 2: Revisiting Linux Network Basics
Understanding the TCP/IP protocol suite
Naming the network device
Understanding Linux hostname resolution
Understanding the net-tools and iproute2 suites
Manually managing network interfaces
Managing connections with Network Manager
Summary
Chapter 3: Communicating Between Nodes via SSH
Using OpenSSH
Installing and configuring OpenSSH
The OpenSSH config file
Understanding and utilizing scp
Generating public keys
Keeping SSH connections alive
Exploring an alternative to SSH – utilizing Mosh (mobile shell)
Summary
Chapter 4: Setting up a File Server
File server considerations
NFS v3 versus NFS v4
Learning the basics of Samba
Mounting network shares
Automatically mounting network shares via fstab and systemd
Creating networked filesystems with SSHFS
Summary
Chapter 5: Monitoring System Resources
Inspecting and managing processes
Understanding load average
Checking available memory
Using shell-based resource monitors
Scanning used storage
Introduction to logging
Maintaining log size with logrotate
Understanding the systemd init system
Understanding the systemd journal
Summary
Chapter 6: Configuring Network Services
Planning your IP address layout
Installing and configuring a DHCP server
Installing and configuring a DNS server
Setting up an internal NTP server
Summary
Chapter 7: Hosting HTTP Content via Apache
Installing Apache
Configuring Apache
Adding modules
Setting up virtual hosts
Summary
Chapter 8: Understanding Advanced Networking Concepts
Dividing your network into subnets
Understanding the CIDR notation
Implementing Quality of Service
Routing TCP/IP traffic
Creating redundant DHCP and DNS servers
Summary
Chapter 9: Securing Your Network
Limiting the attack surface
Securing OpenSSH
Configuring the iptables firewall
Protecting system services with fail2ban
Understanding SELinux
Configuring Apache to utilize SSL
Deploying security updates
Summary
Chapter 10: Troubleshooting Network Issues
Tracing routing issues
Troubleshooting DHCP issues
Troubleshooting DNS issues
Displaying connection statistics with netstat
Scanning your network with Nmap and Zenmap
Installing missing firmware on Debian systems
Troubleshooting issues with Network Manager
Summary

Book Details

ISBN 139781784399597
Paperback260 pages
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