Author Archives: dre

About dre

I like all kinds of food.

Silence sandbox log spam (or: Why is sandbox logging ALLOWED access?!)

I’ve been annoyed by sandbox log verbosity since always, but recently I was pushed over the edge when playing with a tool (htop) that calls task_for_pid a lot. It’s open source, so not code signed or entitled. There are various … Continue reading

Posted in OS X, Pro Tip | Leave a comment

Troubleshooting the Adaptive Firewall in OS X Server

Recently I did some spelunking into the Adaptive Firewall facility of OS X Server to devise a procedure for troubleshooting a reported failure of AF to block failed SSH logins. Consider this a supplement to this post at krypted. (although do … Continue reading

Posted in OS X | Leave a comment

eGPU intrigue

As we consider a mac user’s renewed quest for GPU performance – this time for an ‘external’ GPU in a tbolt2 PCI chassis – we find similarities to other timeless quests. For instance, in our quest, the path is not clear in the beginning, and there … Continue reading

Posted in mac pro | Leave a comment

How to rescue aborted QuickTime Player audio recordings

Know that feeling when you remember you don’t have your keys while you are closing a locked door? It’s the same feeling as when you use QuickTime Player to record some lengthy audio, and you remember you didn’t stop the recording while you are putting the … Continue reading

Posted in media, OS X, Pro Tip, scripts, The More You Know, tutorials | Leave a comment

Spotlight, UserFilesOnly, kMDItemSupportFileType, and MDSystemFile

Recently, VMWare Fusion stopped appearing in Spotlight results. Other queries return expected results, and the spotlight index info for Fusion appears OK at first glance via: mdls “/Applications/VMWare Fusion.app” What’s going on, then? To get a different perspective, I tried … Continue reading

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Traffic micro-management: limit network bandwidth used by an OS X process

Problem: you have some silly uploader app that only knows one speed: maximum. You would love a way to make that app back off so it doesn’t saturate your uplink and badly impact the other things using your network. Previously in … Continue reading

Posted in OS X, scripts, The More You Know, tutorials | 3 Comments

Nuke and pave of pfSense on the SG-2440

I may not be the first to deal with the fallout of filesystem corruption on an SG-2240 running pfSense 2.2 due to sudden power loss, but I might be the first to put the cliff notes of the recovery process in … Continue reading

Posted in bit bucket | Leave a comment

PKTAP extensions to tcpdump in OS X

The tcpdump man page in OS X contains various references to something called PKTAP, such as in the documentation for the -k option: Control the display of packet metadata via an optional meta- data_arg argument. This is useful when displaying … Continue reading

Posted in OS X, Pro Tip, The More You Know | 1 Comment

Newpro is boss

2011 was drawing to a close, and I was uneasy at the lack of a Mac Pro refresh. My 2009 MacPro4,1 was still performing admirably, but video workflows were starting to feel sluggish as I incorporated more high-frame-rate content. Tasks like video encoding … Continue reading

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SSL enabled, registration disabled

… and now an announcement from the custodial engineering department: SSL has been enabled. Jihad nuclear al-qaeda infiltrate spy NSA snowden very much wow. I updated media links for recent posts (the ones that load on the front page), but … Continue reading

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