From the Editor - A Spectrum of Great Projects
Put “wireless” and “Linux” on the cover of the same magazine, and people are going to expect 802.11b, or Wi-Fi, networking. We won't disappoint you, as our master chef, Marcel Gagné, covers some desktop tools that you can use to manage your wireless connections (page 24).
Also on the desktop, if you're tuning in to satellite radio and want to control the receiver from Linux, you're in luck. Michael J. Hammel has a friendly GUI app for you. Follow along and learn how you can modify it or write your own applications (page 78).
We got a lot of positive response to Eric Blossom's introduction to software radio in our June 2004 issue. People want a beginner's software radio project to do, so Eric generously developed and wrote up the FM receiver on page 42. Even if you missed the first article, this one will have you listening to FM stations with software. You need a signal for testing, so now corporate radio finally will be worthwhile for someone other than the three Eagles fans who don't have a copy of “Hotel California” and the one guy who wants to buy a Toyota but doesn't know where the dealer is. Once you get started, there are plenty more projects to explore in software radio, so keep in touch when you invent something.
Ian McLoughlin and Tom Scott are quietly inventing a new RF communications mode, with the help of a Linux cluster, Linux FPGA tools and more. See how a modern engineering lab works with Linux on page 36 and get some ideas.
If you're a radio ham, and a little disappointed with the lack of OS diversity in the mainstream amateur radio magazines, you're sure to enjoy Volker Schroer's intro to PSK31 under Linux on page 50. In the early days of LJ, we had a lot of ham readers, so write in if you want more on amateur radio.
Not that ham radio isn't plenty educational and community-building, but radio amateurs settled for a bad deal with governments when radio regulation came into effect, nailed down in the US with the Radio Act of 1927. Amateurs were forbidden to broadcast music, news or general-interest programs. Hams in the 1920s put concerts and sports events on the air but found themselves relegated to talking about—well, mostly about radios. For details, see Bill Continelli's “History of Amateur Radio” on ham-shack.com.
What could have been the first peer-to-peer media went silent. Don't let it happen to new technologies—no matter how tempting it is to want to regulate spam, viruses or “bad software”, doing so could mean we'll wake up to find that all our favorite community Web sites can talk only about Cascading Style Sheets.
Whether you simply want a control panel for Wi-Fi and better music selection via satellite radio, or you're ready to break out the soldering iron and invent a whole new application for software radio, there's plenty to learn and enjoy in this issue. Have fun and see you next month.
Don Marti is editor in chief of Linux Journal.
Fast/Flexible Linux OS Recovery
On Demand Now
In this live one-hour webinar, learn how to enhance your existing backup strategies for complete disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible full-system recovery solution for UNIX and Linux systems.
Join Linux Journal's Shawn Powers and David Huffman, President/CEO, Storix, Inc.
Free to Linux Journal readers.Register Now!
- Server Hardening
- BitTorrent Inc.'s Sync
- EnterpriseDB's EDB Postgres Advanced Server and EDB Postgres Enterprise Manager
- The Death of RoboVM
- The US Government and Open-Source Software
- The Humble Hacker?
- Open-Source Project Secretly Funded by CIA
- New Container Image Standard Promises More Portable Apps
- AdaCore's SPARK Pro
- Canonical and BQ's Aquaris M10 Ubuntu Edition Tablet
In modern computer systems, privacy and security are mandatory. However, connections from the outside over public networks automatically imply risks. One easily available solution to avoid eavesdroppers’ attempts is SSH. But, its wide adoption during the past 21 years has made it a target for attackers, so hardening your system properly is a must.
Additionally, in highly regulated markets, you must comply with specific operational requirements, proving that you conform to standards and even that you have included new mandatory authentication methods, such as two-factor authentication. In this ebook, I discuss SSH and how to configure and manage it to guarantee that your network is safe, your data is secure and that you comply with relevant regulations.Get the Guide