If you are getting any brute force attacks to your dovecot imap/pop3 server, install fail2ban to block the offenders. This works on CentOs 5.7. For other distributions, see the relevant websites. Firstly, install fail2ban. You should have the rpmforge repo from my previous post. Enable it first to install fail2ban: # cd /etc/yum.repos.d/ # vi […]

I wanted to create a simple drop-in script to add brute-force attempt blocking by IP address to my PHP/MySQL login scripts. It should be pretty simple to use. It needs a database to run off, you enter the database values and call the script (see usage) before login and on login failure (also before login […]

IP Failover (proof of concept) Essentially the idea is that if your primary web server goes down, your backup server automatically takes over (failover). When your primary server is back online, it takes over again (failback). It sounds simple, but it can be very complicated and expensive to eliminate all the single points of failure […]

This is a follow up to my previous post dmraid error reporting by email, this time for a hardware raid controller, this one is the 3ware/AMCC 9550SXU-8L. The concept is exactly the same, the only thing different is the script that checks the raid array status. We will be using the command line tool tw_cli […]

dmraid is a software raid/fakeraid/onboard raid tool. As far as I can tell, the only error reporting that dmraid does is by hooking into logwatch – which emails me a very long file I don’t often read and I would like to know immediately if my raid array is degraded. This works for me on […]

I couldn’t find a function online that copies folders recursively in PHP and actually works, so I wrote my own: function recursiveCopy($src, $dest) { if (is_dir($src)) $dir = opendir($src); while ($file = readdir($dir)) { if ($file != ‘.’ && $file != ‘..’) { if (!is_dir($src.’/’.$file)) copy($src.’/’.$file, $dest.’/’.$file); else { @mkdir($dest.’/’.$file, 0750); recursiveCopy($src.’/’.$file, $dest.’/’.$file); } //else […]

After my previous post, Javascript (JQuery): Social networking feeds all in one place, Facebook went and added authentication to the feed retrieval. After much head-scratching, this is how to enable the Facebook feed under the new OAuth system. You need an access token to get to the data, so what we are going to do […]

Today we are going to get feeds from Twitter, Facebook, Youtube and Flickr all in one place for your website using JSON and the JQuery library: Be careful on this page with wrapped lines! Firstly we declare the jquery library in our head section (obviously download it first and change the path to match your […]

None of the vacation/forwarding plugins work with Virtualmin so this is my workaround. Firstly, users need to be created as Mail and FTP users, since we will be using FTP to place the .forward files. Download and unzip the plugin: wget http://downloads.sourceforge.net/project/rcubevacation/vacation-1.9.9.zip?use_mirror=ovh&ts=1280145947 unzip vacation-1.9.9.zip cd vacation vi config.ini We are going to use Usermin’s own […]

I can never get the Virtualmin binary file compilation to work properly, so here’s my workaround to enable changing a user’s Virtualmin password in Roundcube Webmail. Firstly, let’s go to the plugins/password directory (your path will be different): cd ~username/public_html/webmail/plugins/password cp config.inc.php.dist config.inc.php vi config.inc.php We need to change the password driver to virtualmin (hit […]