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Tech

SPF records and Payflow Link

EDIT – Update January 3, 2013: There was a bug in my previous SPF record below, that included “ip4:96.0.0.0/1”. That should have read “ip4:96.6.0.0/11”. Unfortunately the initial incorrect record allowed half the Internet to pass SPF tests, so it would be better to use the corrected version or edit this list to suit your tastes. […]

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Tech

Variable interpolation in Batch Files

Apparently it is possible to use variable interpolation in Windows batch files. @echo off set myVar=bob goto print_%myVar% echo ALICE :print_bob echo BOB Output is: BOB Useful for all kinds of things…

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Tech

Android sends read receipts automatically

I was surprised recently when someone responded to a read-receipt showing when I had read one of their messages. Like many others, I turned off Outlook’s option to send read receipts automatically many years ago. Since I had just changed Exchange 2010 mail providers, I assumed that I had missed this option and simply needed […]

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Tech

FVS338 dialup backup fails

If your Netgear FVS338 dialup backup is failing, you might have a firmware problem. Sometime after firmware 3.0.2-21 (and not fixed as of 3.0.7-24), the dialup interface connects and grabs an IP address – it even allows ping, traceroute, and DNS lookups from the FVS338 web interface – but it will not route any traffic […]

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General

Apache: “couldn’t create child process: 720005”

If you installed Apache on Windows (I like WAMPServer myself) and you’re trying to run Perl scripts, you might encounter the dreaded Internal Server Error (500) and a cryptic entry in Apache’s error log: [Sat Jun 04 19:01:50 2011] [error] [client 127.0.0.1] (OS 2)The system cannot find the file specified. : couldn’t create child process: […]

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Tech

Munin and High Loads

Munin, while a great monitoring tool, can be a little bit of a CPU hog. I had installed it awhile back and looked at the graphs just for fun now and then (I’m lucky, my servers are humming along pretty smoothly), but I started noticing load averages were measurably higher than they were before I […]

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Tech

Motorola Xoom USB Dock

I took the stock Motorola Xoom dock (the cheaper one, not the speaker dock) and modded it to provide a USB link to the PC. The mod does not destroy the dock, but it does render the audio-out jack unusable until the mod is reverted. I don’t care about audio-out on my dock, but I […]

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Reviews

Android Voice Dialing with Confirmation

If you have an Android phone, you may be lamenting the fact that when you use bluetooth to launch a voice prompt and say “Call mom at home”, the phone mysteriously starts dialing Kentucky Fried Chicken in Sandusky, Ohio (and your mom happens to live in Florida). And it does all this without confirmation! Thanks, […]

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Tech

Google Hacking Me

Update: they haven’t done this in awhile now – maybe they stopped this behavior (October 2011). (original post follows) I know this is probably under the radar for most people, but Google, who says “do no evil” tries to hack web sites on a regular basis. Last night, Googlebot (more specifically the host “crawl-66-249-68-246.googlebot.com”) tried […]

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Tech

Countering a Slow Loris Apache attack

Here is a poor man’s way to mitigate a slow loris attack. The DoS attack, not the fuzzy mammal with the poisonous elbows. If you’re reading this, hopefully you’ve searched and figured out what the slow loris attack is all about. You probably also run Apache 1.x or 2.x. I read about the antiloris module […]