How to Get Working Internet on Linux Mint/Ubuntu from Behind A Squid Proxy

Almost all of us have to encounter proxies in our work environments. Sometimes those are useful (providing security and firewall), and sometimes those are just a pain. For example, at my work place, I have to go through a Squid proxy. In this tutorial, I will show how to set a Linux Mint/Ubuntu (and possibly other distros) computer to get “internet connection” from behind a proxy. By “internet connection”, what I mean is to get the Synaptic package manager (or APT) and other applications (like the browsers) send http requests through the proxy. Let’s get to it.

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Home Networking: File Transfer

Many of us have two or more computers at our home and like to share files between these PCs. If you don’t have a huge PenDrive or portable HDD or a DVD writer, then you might have problem to transfer large files from one PC to another. You can easily create a Local Area Network (LAN) among the computers for sharing files among the PCs.

This article shows how to connect two PCs using a cross-over LAN cable for file sharing purposes.

Here are the descriptions of the PCs

PC1: Ubuntu 8.04 with a Tenda 10/100Mbps LAN card
PC2: Windows XP Profesional with Built-in 10/100Mbps LAN card

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Changing the default ‘generic’ kernel to ‘server’ kernel in Ubuntu

If you install Ubuntu from the live cd or alternate install cd, the ‘generic’ kernel would be installed by default. The ‘generic’ kernel focuses on i586 and i686 CPU architectures. But if you have a newer CPU, like Pentium 4 HT, Dual Core or Core2Duo, you might want to install the ‘server’ kernel to improve your PC performance. The ‘server’ kernel focuses on i686 architectures and posses some unique advantages over ‘generic’ kernel in case of task management.

Note that you should not change the default kernel if you don’t have a CPU that belong in the families stated above. And also be aware of the fact that kernel changing might cause big problems in your computer [such as making the system unstable!].

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