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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
Hi. I'm a Unix Administrator, mathematics enthusiast, and amateur philosopher. This is where I rant about that which upsets me, laugh about that which amuses me, and jabber about that which holds my interest most: Unix.
Posted 04-23-2016 at 01:33 PM byrocket357 (Musings on technology, philosophy, and life in the corporate world)
I work on the network devices support team at AWS. We provide troubleshooting support for various network-related devices, such as Cisco ISR/ASR/ASA, Juniper SSG/ISG, Fortigate, etc... most of the troubleshooting revolves around AWS Direct Connect and IPSec.
We have a few network labs at AWS that contain many of the devices we support, however, I've always been more of a "hands-on" kind of guy, so I recently purchased a Cisco ISR and a Cisco ASA (2801 and 5505, respectively)....
Posted 04-10-2016 at 10:47 AM byrocket357 (Musings on technology, philosophy, and life in the corporate world)
Customer calls in, stating he can't get BGP to come up across an IPSec link from a VyOS instance to another region. He explains that this is his first time messing with BGP, and that the session won't establish. We review his configuration, and for a first-timer, I'm really impressed with his understanding of BGP. Clearly this guy has done his homework, as everything, including odd little quirks of BGP, are all accounted for.
"Well, let's sledgehammer the problem. Ping the...
Posted 04-04-2016 at 06:00 PM byrocket357 (Musings on technology, philosophy, and life in the corporate world)
Spent the past 20 minutes troubleshooting an OpenVPN issue.
Problem: OpenVPN client connects, pulls an IPv4 address, but does not get route information. Manually added routes don't allow ping.
Solution: tap devices cannot talk to tun devices, at least not directly/natively. tap devices are layer 2. tun devices are layer 3. 2, no matter how close it gets to 3, is simply not 3. (ARP tries hard to prove otherwise, but as there is no such thing as a L3 header in...
Posted 03-31-2016 at 03:38 PM byrocket357 (Musings on technology, philosophy, and life in the corporate world)
Updated 03-31-2016 at 03:44 PM byrocket357
My wife and I homeschool our children with an online school. Our eldest is soon to be a teenager; coupled with her "easily distracted" personality, we've gotten to the point where we have to monitor her during school hours to ensure she isn't getting off track with online games, youtube, etc...
So my wife tasked me with filtering traffic. My initial instinct would be to simply drop web traffic and smile about it, but given that they have online courses I couldn't sledgehammer...
Posted 01-21-2016 at 02:40 AM byrocket357 (Musings on technology, philosophy, and life in the corporate world)
Updated 01-21-2016 at 02:46 AM byrocket357(typos!)
I've had a goofy x86 pizza box for over a decade, some early PIII with 256 MB RAM. It has a couple of odd features, namely it boots off of CF and has dual on-board NICs, that made it a nice firewall machine. I got it when the ISP next door to the company I was working at went out of business, and the network guys didn't feel like hauling all the gear off.
Only problem is, it is the only 32 bit machine in my inventory, and I've been putting off upgrading it. Luck has it, fate chose...