Linux Networking Securing Your Network Tutorial

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Tutorial: Linux Networking Securing Your Network Tutorial

Now that you've mastered the basics of setting up a small-office/home-office Linux network, it's time to tackle an incredibly important issue: securing your network. In this installment, William Wong describes the steps you can take to secure your Linux n

Tutorial Details:

Linux Networking Securing Your Network

The only sure way to lock down a PC is to disconnect it from any network and never load a program or a document file that supports macros. That is rather impractical especially when our goal is to connect the network to the Internet.

There are a number of avenues and methods through which security of a network can be breached. Attacks from the Internet through the firewall are the ones we look at here. Other threats include computer viruses and insider manipulation.

Attacks from the Internet can be divided into two types. The first are ones that try to gain access to the router/firewall or the network itself. These are the ones we will concentrate on. The second type attempts to prevent the connection to the Internet from being used. These types of attack are made from computers on the Internet and flood the firewall. There is not much typical users can do about this second type without the help of their Internet service providers and some rather technical assistance. Luckily, this type of attack will not result in the loss of information or compromise the security of the network.

Unfortunately, people trying to gain access to the network from the Internet are often determined and well equipped with attack software. It is therefore important to have multiple security measures in place. We will take a look at the security measures implemented on the Linux router/firewall discussed in the previous articles, but these measures should not be the only ones employed.

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