drhigh's blog

High Availability with Open Source

In the article High Availability with Open Source, Josh Kuo looks at three of the popular Open Source projects to implement High Availability redundancy (failover): Heartbeat, keepalived, and CARP. The article talks about where each of these three excels and some implementation ideas. Josh also mentions the DRBD utility to sync two remote filesystems to aid in an advanced High Availability setup.

Speed Up Encryption with PadLock

Josh Kuo talks about the benefits of the VIA processors with built-in PadLock hardware encryption assist in his article Speed Up Encryption with PadLock. Josh looks at the difference in system resources between hardware assisted encryption and straight software encryption, as well as some of the basic capabilities of VIA's PadLock technology.

Seagate's Full Disk Encryption (FDE) hard drive

Josh Kuo's article Seagate's Full Disk Encryption (FDE) hard drive talks about the pros and cons of using the new Momentus FDE notebook drives from Seagate. They feature hardware encryption of the entire drive, so it is an excellent security mechanism to prevent data loss in the event that the laptop itself is stolen. However, what about the inevitable lost passwords?

The Business Case for Open Source Software

High Mobley's article The Business Case for Open Source Software is not the usual "OSS saves money" argument. The article addresses issues like proprietary software vendors going out of business, being bought out, or even just dropping support for some of their products and leaving their customers out in the cold...

Open Source Network Monitoring at SCALE 5x

High Mobley's article Open Source Network Monitoring at SCALE 5x he talks about the three big Open Source networking monitoring systems who had booths at last month's Southern California Linux Expo - Zenoss, OpenNMS, and GroundWork. The article gives an overview of each project and it's associated company's business model, as well as a short run down of a few of the interesting features of each project.

How to Handle Network Growing Pains

In How to Handle Network Growing Pains, Cynthia Kuo outlines the presentation "Admin++, What Root Never Told You", which Ron Gorodetzky, Senior Systems Administrator for Digg, gave at the Southern California Linux Expo (SCALE) in February. It includes a link to Gorodetzky's presentation slides.

Linux File System Security Options

Josh Kuo's article Linux File System Security Options outlines various software-based methods to encrypt your Linux filesystems. He addresses loop-AES, FUSE, eCryptfs, steganographic filesystems, sshfs, and ReiserFSv4.

ZoneMinder Digital Surveillance Systems

Justin Brink's article ZoneMinder Digital Surveillance Systems outlines the benefits of using the Open Source security camera monitoring application ZoneMinder over buying a "blackbox" DVR for your security system.

Beef Up Your Wireless Router

Josh Kuo's article Beef Up Your Wireless Router talks about the OpenWRT embedded Linux distro for the the Linksys WRT series wireless routers (and more). The article lays out some of the amazing things you can do with your Linux-enabled wireless router such as using it as a VoIP gateway, a wireless hotspot, or even an encrypted layer 2 tunnel endpoint for remote troubleshooting.

Secure Linux Appliances in Your Enterprise

High Mobley's article Secure Linux Appliances in Your Enterprise talks about the Debian Router Project, which provides an easy way to build your own Linux appliances. The article also provides several ideas of what types of appliances you can make with your new found knowledge.

Travel Back Vim Time

Josh Kuo's article about Vim describes a new time-shifting feature to make your editing life easier.

ZoneMinder Digital Surveillance Systems

InfoWorld has an article by Justin Brink about the open source ZoneMinder digital surveillance camera recording software. Justin discusses the features of ZoneMinder, as well as why a business would choose ZoneMinder over more expensive black box DVR options.