Asterisk FreePBX guides

This procedure can be used to install OpenVPN and/or PPTP VPN access on a Redhat Enterprise Linux v6 server or OpenVZ RHEL v6 virtual server.  For OpenVZ you also require root access to the physical server or you need your service provider to enable virtual server access to tun and ppp on the physical server for you. 

This install procedure was tested on CentOS v6 using the 64bit distribution.  I have not tried on v5 or 32bit distribution.  For pptp on an OpenVZ virtual server I believe your OS needs to be the same bit type as the physical server.  Ie. if the OpenVZ physical server is 64bit then your virtual server OS must also be 64bit in order for pptp to work

This script is a highly modified version of the AsteriskNOW hardening script a copy of which is here.  Some things were added.  Some were changed.  Some things were taken out.  Most importantly, it has been updated to work with newer versions of FreePBX where all the settings that used to be in amportal.conf are now in the Asterisk MySQL database.  As such, it is not compatible with older versions of FreePBX (anything before v2.9) which use the amportal.conf file.  

Unlike the original script, this script is (theoretically) designed to work with any distribution or install of FreePBX (such as the FreePBX install procedure on this website) regardless of what the defaults are set to.  This also means it can be (theoretically) re-run on the same server.  All you need is your current MySQL root password.  If you do not know your current MySQL root password and have no way of getting it, this procedure shows how to change it to whatever you want.