May 09

Folding@Home Diskless cluster

For a very long time (about 11 years… wow) since I was in high school, I have been a proud supporter of Folding@Home. It is a great project not only because of the backend research it helps with, but also the technical aspects of their distributed system. But I have always wanted to run it …

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Mar 21

Finding domains without NS records in PowerDNS

So, a fun one happened the other day. I needed to remove all the old domains from our nameserver cluster which is open to customers who were no longer pointing there domains to our nameservers. Easy eh? Well, unless you have access to a unrestricted IP capable of doing that many lookups on Ausreg (most …

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Jan 05

pmacct CentOS 6 with flow-fanout

Sigh, I swear I find all the weird edge cases with every product I touch, hence this blog. The latest being pmacct on CentOS 6 with a flow-fanout

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Dec 23

Cisco ASR 1001 Memory

We recently got 2 new ASR 1001s at work to complement 2 we already had. Stupid me but specified 4GB RAM on the order not 8GB that we needed 🙁 The size of the full BGP table now means that 4GB is starting to get to be a bit of a tight squeeze on 4GB …

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Nov 26

Qualys A+ Rating with Zimbra

Over the last few months there has been multiple exploits in various SSL libraries, to the point where pretty much every site on the internet has had to tweak something. I recently embarked on making sure my company were Qualys SSL test A+ Rated ( to all internal and external sites. I’m slowly getting there, …

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