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 IPv6 tunnel via Hurricane Electric

Hurricane Electric is a major backbone and colocation provider based in the US. In addition to their hosting/transit services, they also host, another free IPv6 tunnel provider, and, a training and certificate site for learning about IPv6 networking.

Unlike AYIYA tunnels from SixXS, IPv6 tunnels from Hurricane Electric operate over IP protocol 41, which is defined by the IPv6 Encapsulation protocol (RFC2473). This is a separate protocol from ICMP, TCP and UDP.

The downside of this approach is that it does not operate over NAT firewalls natively. This may be an issue if your new firewall device is operating behind an ISP firewall with its own NAT. The ability to forward protocol 41 traffic to a machine behind the NAT is device specific and does not work on all firewalls.

How to do it…

  1. Visit and click Sign up now!, and sign up for a Free account.

  2. Under User Functions...