Easy Peasy Linux Firewalling – iptables

A lot of our customers have asked for firewalls, and since this is a common theme, i decided that I would help them out. Of course it can be a mission to learn how to make your own and what to do or not do, and some of the pre-made ones can be confusing. So… Continue reading Easy Peasy Linux Firewalling – iptables

Keeping things going over the holiday season

Well its that time of year again, and you do NOT want to be dealing with broken servers over Xmas. Heres a few tips to make sure things stay honkey dory over the Xmas period. Upgrades: Dont upgrade anything, do not do a new release, do  not change anything at all. Sometimes even something that's… Continue reading Keeping things going over the holiday season

Unsure who is sending spam? Try this

Anyone who has hosted peoples websites before, has had  either a blog hacked, or some guy thinking he is going to send mass mailouts using PHP or similar happen. Its extremely hard to trackdown and deal with, and yet it can get your server listed at spam service denying legitimate email from getting through. This… Continue reading Unsure who is sending spam? Try this

Does your VPS have MD5 enabled for passwords?

We recently discovered that the way we install a VPS differs slightly from the usual CD install. This is not something we do specifically but something that can be improved on in the set-ups of CentOS5.3. When you install from a CD it automatically enables MD5 encryption in passwords (which should be the norm), however… Continue reading Does your VPS have MD5 enabled for passwords?

Safe rm prevents accidents! try it!

I found this the today http://www.safe-rm.org.nz/ , and having had the odd accident im most definitely going to be installing this on my own server! What is safe-rm? Safe-rm is a safety tool intended to prevent the accidental deletion of important files by replacing /bin/rm with a wrapper, which checks the given arguments against a… Continue reading Safe rm prevents accidents! try it!

nginx hacking using proxy

It sucks getting hacked Every now and then servers get hacked. Often because of an exploitable webapp, or because (most commonly) a weak, easily guessable password was used on a well known user account (like 'root' or 'info' or 'test'). Once hackers gain access they often install some kind of malware. e.g. something that goes… Continue reading nginx hacking using proxy