15 steps to secure your iPhone / iPad
There has been a lot of controversy in the media regarding the security of Apple iPhone and iPad devices. Whilst both ship with a natively secure operating system, the majority...
How to check a CentOS ISO checksum
When you download a CentOS DVD ISO file (for example: http://iso.linuxquestions.org/download/1274/2996/ftp/mirror.its.uidaho.edu/CentOS-5.5-i386-bin-DVD.iso), it can be helpful to check the files checksum against the download list to confirm the integrity of the...
Linux ‘Give root password for maintenance’ Lost Password
In the event your Linux box experiences disk or file system issues you may receive a “Give root password for maintenance” prompt upon reboot. If you have your root password...
Protect your Asterisk server against brute forcing
As Internet accessible corporate Voice over IP servers continue to grow in number, so does the risk of rogue individuals gaining access to SIP extensions due to weak or poorly...
Install Fail2Ban on CentOS 5.5
The installation process for Fail2Ban (a brute force protection application) on CentOS 5.5. is as follows – Login to your server as root, then: wget http://downloads.sourceforge.net/project/fail2ban/fail2ban-stable/fail2ban-0.8.4/fail2ban-0.8.4.tar.bz2?use_mirror=transact tar -xf fail2ban-0.8.4.tar.bz2 cd...