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March 6, 2015

Schedule EC2 Instance Start and Stop

If you use EC2 instances for tasks that only need to be performed during work hours, it can be challenging and annoying to manually start up and shutdown instances when you need them.  There are services that can handle this for you (Skeddly, Ylastic, etc) but they cost money and are overkill for small companies […]

December 31, 2014

OSSEC Rules for OpenVPN

We use OpenVPN and OSSEC together regularly. Unfortunately, OSSEC doesn’t do any useful interpretation of OpenVPN events out of the box. Instead, you’ll wade through a stream of event id 1002s in your email to see what’s going on with OpenVPN. We recently sat down and drafted a custom decoder and a few custom rules […]

October 2, 2014

Replace Journald in Fedora or CentOS

Journald – a contentious subject in the Linux community.  On one side, proponents tout advanced features and security. On the other, die-hard *nix users decry yet another move away from the simplicity of text files and more towards the Windows way of obfuscated binary file based systems.  After using journald (and systemd) for a couple […]

May 11, 2014

Fedora Disk Encryption on Linode

For bleeding-edge non-production and experimental use, Fedora is a great choice of server distributions.  For small non-enterprise deployments, Linode is our host of choice. As much as we’ve come to appreciate Linode, as Fox Mulder says: trust no one. This is especially true when no companies appear to be  immune to the intrusions of the […]

February 6, 2014

Best Practical SSL Configuration

Updated: January 2019 with latest suggestions and revised commentary. Updated: May 2016 with new cipher suggestions and revised commentary. We routinely use SSL Labs to verify systems we’ve configured.  It’s a great service to verify that an SSL configuration is reasonably secure.  It  scores a site in four different areas:  Certificate, Protocol Support, Key Exchange, […]

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Recent Posts

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