In this series of articles I will run through how to get started once you get FreePBX setup. You will need to run through the articles in order as some of the later ones will rely on items set up in earlier articles.
For a trunk (required to make calls to the outside world) I will use callwithus. Click here for a free account.
Adding a trunk
The main FreePBX menu is down the left hand side of the screen
I saw the first ‘externsion scan’ of my Asterisk box this week. That is, an external server tried to register as an extension, starting at extension 100 all the way up to extension 999. I’m assuming if they had found a valid extension number then this would have been been followed by a brute force password (secret) scan.
This is an interesting article explaining the problem a little more – http://michigantelephone.wordpress.com/2008/11/28/why-didnt-freepbx-developers-implement-important-security-patch/
If you’re running Asterisk (and FreePBX) then the least you need to do is make sure that you’ve got pretty strong passwords for your extensions.