Book Image

Linux Networking Cookbook

By : Agnello Dsouza, Gregory Boyce
5 (1)
Book Image

Linux Networking Cookbook

5 (1)
By: Agnello Dsouza, Gregory Boyce

Overview of this book

Linux can be configured as a networked workstation, a DNS server, a mail server, a firewall, a gateway router, and many other things. These are all part of administration tasks, hence network administration is one of the main tasks of Linux system administration. By knowing how to configure system network interfaces in a reliable and optimal manner, Linux administrators can deploy and configure several network services including file, web, mail, and servers while working in large enterprise environments. Starting with a simple Linux router that passes traffic between two private networks, you will see how to enable NAT on the router in order to allow Internet access from the network, and will also enable DHCP on the network to ease configuration of client systems. You will then move on to configuring your own DNS server on your local network using bind9 and tying it into your DHCP server to allow automatic configuration of local hostnames. You will then future enable your network by setting up IPv6 via tunnel providers. Moving on, we’ll configure Samba to centralize authentication for your network services; we will also configure Linux client to leverage it for authentication, and set up a RADIUS server that uses the directory server for authentication. Toward the end, you will have a network with a number of services running on it, and will implement monitoring in order to detect problems as they occur.
Table of Contents (19 chapters)
Linux Networking Cookbook
About the Author
About the Reviewer

Setting up an NFS server

NFS, or Network File System, was initially created by Sun Microsystems to allow clients to access remote file shares on Unix systems back in the 80s. NFS is trivial to set up and is typically rather fast, but it can introduce some interesting security issues if it is not done correctly.

How to do it…

  1. Install NFS server:

    sudo apt-get install nfs-kernel-server
  2. Configure shares within /etc/exports:

    /directory/to/share client(options)
  3. Install the NFS client software:

    sudo apt-get install nfs-common
  4. Mount the share:

    mount -t nfs4 server:/directory/to/share /mountpoint

How it works…

The nice thing about NFS is how trivial it is to set up. You simply install the NFS server, configure /etc/exports and go. The only real details to learn and understand are some of the options available and their implications:

  • Path to share: This is the absolute path to the directory on the server, which you want to export. For ease of maintenance, it is recommended that you add a level of indirection...