Author Archives: john

Solution to this week’s NPR puzzle using simple Linux commands, again

Intro As I understood it, this week’s NPR puzzle is as follows. Think of a figure from the Bible with five letters. Move each letter three back, e.g., an “e” becomes a “b.” Find the Biblical figure which becomes an … Continue reading

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The IT detective agency: rogue IPv6 device messes up DHCP for entire subnet

Intro This was a fascinating case insofar as it was my first encounter with a real life IPv6 application. So it was trial by fire. The details I think the title of the post makes clear what happened. The site … Continue reading

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Where is my IP without the aggressive ads

Intro To locate where any IP address is located – known as geoip – you can do a simple duckduckgo search and get an idea, but you may also get sucked into one of those sites that provides a service … Continue reading

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What credit card fraud looks like

Intro A lost credit card. Or was it misplaced? Months later a whole bunch of “modest” charges appear all at once, a couple days after a few lower-value test charges were made. Thank goodness I had the presence of mind … Continue reading

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NJ homeowners: how to sell your SRECs from your solar panels

Intro I was an enthusiast and got solar panels on my roof while there was still a tax credit for doing so. But then i became lazy and didn’t want to bother selling the SRECs I was awarded. Here is … Continue reading

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Linux tip: how to enable remote syslog on SLES

Intro I write this knowing I still don’t know anything to speak of about syslog, but, sometimes you gotta act without knowing. I needed to send syslog to somewhere in a big hurry so I figured out the absolute minimum … Continue reading

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Suppress /apple-touch-icon URLs on an F5 ASM

Intro Displaying the ASM event log is slow – it can take minutes on our older equipment. So anything that helps cut out the clutter in the returned log entries may save precious minutes of, e.g., paging to the next … Continue reading

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Pi-hole: it’s as easy as pi to get rid of your advertisements

Intro I learned about pi-hole from Bloomberg Businessweek of all places. Seems right up my alley – uses Raspberry Pi in your home to get rid of advertisements. Turns out it was too easy and I don’t have much to … Continue reading

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Docker on CentOS 6: FAIL

Intro I think I’ve been running CentOS 6 for six years now. With upgrades I’m at v 6.9. It was nice and new six years ago, but not so much anymore. I think it showed its age when I tried … Continue reading

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Future project idea: Interplanetary file system, IPFS

Intro If I had more time and more energy, what I’d like is to explore the Interplanetary Filesystem, perhaps put up a server and create some objects. It seems right up my alley as I was an early adapter and … Continue reading

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