1. Full reinstall of Trixbox and Failban
2. Block web access via vpn and change ssh port
3. Create IPTables to accept only certain IPs and block all other IP address (Iptables there but not working as it should)
4. FIX - 1 extension/trunk has weak secret (asterisk error message)
Warning: The use of weak SIP/IAX passwords can compromise this system resulting in toll theft of your telephony service. You should change the reported devices and trunks to use strong secrets.
Extension: 0 / Secret has sequential digits
5. Download and install libevent-1.1a.so.1
6. Also upgrade CentOS release 5.2 to newest version