Category Archives: system administration

modrewrite to combat spam attacks

This is a simple ModRewrite i use to combat the file upload, then expand attack that is fairly common with poorly created upload scripts  Basically this reads, if the request or the refferer contains any of the bad words, redirect … Continue reading

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Vmware vSphere – wrong amount of free space reported.

Earlier today we began to upgrade our ESX 3.5 machines to VMware vSphere (esx 4.0) We normally have 3 ESX hosts, one has been offline and retasked to testing our new SAN hardware. We have enough capacity on our esx2 … Continue reading

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SPAM SPAM GO AWAY!

It seems the new trend for successfully exploited weak web applications is that they will only show their seedy content to google or other search engines. They will only be triggered to show their content when they are accessed by … Continue reading

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The trials and tribulations of WordPress SPAM

In the past month i’ve seen a huge increase hacked and spammed WordPress installs. At CIAS we have 1000+ users accounts with 203 individual installs managed by the students, so i usually try to allow the students the benifit of … Continue reading

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Well… that was an interesting night!

Tonight was supposed to be a very simple hard drive copy to a server, virtualize a physical server, get a beer and go home… I figured, i’d be at home by 6 or 7pm… well… Technology has a way of … Continue reading

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Managing multiple Debian linux servers

At CIAS here we manage around 20 linux machines, of which only a handful of them are in a cluster. This means that conventional tools such as puppet and other cluster management software suits don’t fit well into what we … Continue reading

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