Open Source Software and Linux:

December, 2008


December 28, 2008  3:33 PM

Adventures with Linux and external hard drives

John Little Profile: Xjlittle

I received a Western Digital 1TB external hard drive for my linux server on Christmas. Way cool! Now I could set up a linux NAS filer and backups for the server and other Linux and Windows machines that we have. While the linux server was running I plugged the external hard drive into the USB...

December 25, 2008  11:23 PM

Merry Christmas!

John Little Profile: Xjlittle

I hope all you geeks and nerds and people who generally like hi tech toys got all that you wanted for Christmas. I know that I did. I got a 1TB external drive that I can use to back up all of my family's computers on the server. I'll probably create a virtual host using the

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December 25, 2008  4:55 AM

Quick Subnetting and IP calculations Part 2

John Little Profile: Xjlittle

In my last post I discussed how to make quick subnetting and IP calculations. This post is will help us determine how many hosts on a network. Suppose that you know your IP address and an abbreviated notation subnet mask. What you need to find out is the IP of your default gateway. The...


December 21, 2008  11:15 PM

Quick Subnetting and IP calculations Part 1

John Little Profile: Xjlittle

With all of the ip and subnetting calculators all over the internet it might seem to some that learning subnetting is unnecessary. I think that it is a skill that is underused and should be learned by all network administrators. It's really not that hard to get the basics down. In this article...


December 20, 2008  6:45 PM

Streamtuner and Shoutcast

John Little Profile: Xjlittle

The other day I fired up Streamtuner to listen so some Christmas tunes on Shoutcast. Imagine my surprise when Streamtuner wouldn't bring up any channels. What a disappointment. A quick check of the Streamtuner...


December 20, 2008  3:57 AM

Learning Sun Solaris at the Sun Open Learning Center

John Little Profile: Xjlittle

I admit I have become intrigued with OpenSolaris and Sun Solaris. Sun has made it extremely easy to get started learning these two operating systems with their Sun Open Learning Center. The

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December 18, 2008  2:03 PM

Recovering files from an LVM or ext3 partition with testdisk

John Little Profile: Xjlittle

I recently had a virtual server crash that was using LVM as the disk on which the VM was installed. To complicate matters even further the virtual machine was using LVM formatted with ext3 for it's file systems. I had 25 GB of music on here that I did not want to lose so I was bent on figuring a...


December 17, 2008  3:16 PM

Sometimes it’s the tech support and not the user..

John Little Profile: Xjlittle

Ok we've always had a good laugh at users saying and doing dumb things that to us are obvious. I ran across this web site that not only points out user foolishness but some not so smart tech support as well. Read on...

* Customer:...


December 13, 2008  10:59 PM

Adding the iptables firewall to the Xen domU (part 2)

John Little Profile: Xjlittle

In my last column we set up a physical NIC in our Xen domU to expose it to the internet and setup our iptables firewall. At this point you should have 2 interfaces in your domU. One should be facing the internet and have an IP Address assigned from your ISP. The other should be a typical Xen...


December 12, 2008  7:56 PM

Setting up a physical NIC for a firewall on a Xen domU (Part 1)

John Little Profile: Xjlittle

Recently I brought up a new Xen server that needed an iptables firewall on a domU. My first thought had been to setup the firewall on dom0 but that turned out to be a difficult task because of all of the virtual interfaces that are created. Red Hat/Centos also installs a set of rules by default...


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