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 Check port used in linux

If you want to see which process is using which port (in this case, port 53), you can do it with...

 How do I enable PHP Imap support on Directadmin?

We'll show you how to enable PHP-imap support for PHP 5 in Directadmin:1) Make sure you have...

 Block IP from your server via iptables

You can block an IP ( from your server with the following command: # iptables -I...

 Enable DMA on disk - against slow disk speed

We had a server performing pretty poorly and we went to investigate.It seemed the disk speed was...

 How to update your cpanel license?

If your Cpanel (trial) license is expired and your new license is activated, you have to update...