If you have presence in internet, whether it is a server you fully manage or hosted, even shared by somebody else, you need to think how you can secure yourself from potential malicious attack. Truth is simple, you will be … Continue reading →

There are times when a webserver which you’re in charge of administrating has a traffic spike and you need to try to identify whether that is malicious or standard traffic. There is always the possibility to check the log files, … Continue reading →

Christmas 1982. I ran downstairs like 1000′s of kids (mainly boys) and got my hands on my new Sinclair ZX Spectrum 48K. Wow. With its colour graphics, sound and rubber keyboard I was in heaven. It plugged directly into a … Continue reading →

No it’s not a new Android update. If you own a Raspberry Pi, you’re probably either thinking of some practical uses for it or you just like to play with it and see what you can do. Either way installing … Continue reading →

If you ever used SSH then you must heard about tunneling feature. “By using tunneling one can (for example) carry a payload over an incompatible delivery-network, or provide a secure path through an untrusted network.” – wikipedia.org I’m going to … Continue reading →

cpulimit is a small program written in C that allows to limit CPU usage by Linux process. Limit is specified in percentage so it’s possible to prevent high CPU load generated by scripts, programs or processes. cpulimit is pretty useful … Continue reading →

PHP have now announced that the latest versions of PHP have been released today, they are 5.3.19 and 5.4.9. This releases fixes about 15 bugs. All users of PHP are encouraged to upgrade to PHP 5.4.9, or at least 5.3.19. … Continue reading →

Memory usage in linux always seems high, regardless of what applications you are running and if you restarting them or now. And if you leave it as it is, it raises over time without any reason. There is a simple … Continue reading →

Version 3.6.7 of the Linux kernel was released on November 17th, which might make users of Red Hat Enterprise or CentOS wonder why they’re still running 2.6.x versions of the kernel. Ubuntu jumped to version 3 in October 2011, with … Continue reading →

I had this situation recently when Apache got high load, ate all the remaining RAM and started to consume SWAP too. If you ever experienced this you may already know that this is mad spiral that usually brings the system … Continue reading →