Introduction This guide will talk about how to stress test an asterisk installation, IE generate calls with in asterisk so you can see at what point your system will start to give bad audio out to a caller. First things first for this you will need: 1 asterisk 1.4 or 1.6 or later installation of…
Category: Little Guides
Simple way to protect asterisk from being hacked… FAIL2BAN…..
Introduction This guide will detail how to install fail2ban on a centos 32bit system with asterisk installed. It is intended to allow you to add an extra level of protection from your asterisk PBX from being hacked. Fail2ban will guard against most services such as SSH and SMTP however this guide will concentrate on protecting asterisk The…
Configuring a snom 3xx to work with a SIP based PBX…
Introduction and Background. This ‘How to’ guide will guide you through setting up a snom phone for an IP-PBX or SIP Based Telephony Service. When you first plug in your snom 3xx IP Phone it will show some information on the LCD screen one being the MAC address the other being the IP address, please…
DHCP Relaying over IPSEC with a back end Centos 5.5 server…
Introduction This post is going to be a high level over view of having multiple sites all connecting back to a central office or hosted server in a data center using IPSEC VPN. Before starting make sure you have a IPSEC VPN tunnel up to the office or data center and validate connection both to…
Open Source Network Attached Storage with FreeNAS…
The FreeNAS distribution is tailor-made for installation in a small office environment. It is an extremely low-resource network storage system that you can administer through a Web browser, but it supports high-end features like automatic backups, replication, LDAP or Active Directory authentication, and seamless file-sharing over NFS, CIFS, AFP, and even FTP and TFTP. The latest release…
Making a Low cost, high power router/Firewall with m0n0wall…
Every penny counts when you’re deploying networks on a minimal budget. And since I usually use a gateway running m0n0wall running on an SBC (single board computer) like those produced by Soekris or PCEngines WRAP, that £80-170 is a significant chunk of the total network price. So for cost reasons, and to be honest also for the fun of it, I’m exploring using…
Asterisk firewall and some useful tips….
So you have just installed asterisk on a linux system, and maybe you have also installed FreePBX to administer it, good for you. Firewalls.. Below i have listed a nice firewall script for use on a fresh centos+Asterisk installation. service iptables restart iptables -P INPUT ACCEPT iptables -F iptables -A INPUT -i lo -j ACCEPT…
Keeping your traffic safe in public places with SSH Tunneling…
Using OpenSSH on a Linux/Unix system you can tunnel all of the traffic from your local box to a remote box that you have an account on. For example I tunnel all of my outbound E-mail traffic back to my personal server to avoid having to change SMTP servers, use SMTP-AUTH, etc. when I am behind…
DrayTek v3300 LAN High Availability (CARP)…
For the last few years I have been dealing with the Draytek v3300 and wanted to just do a brief write up on the LAN Fail Over abilities of this great device. The Draytek v3300’s High Availabily features enable the LAN to always access the internet and if you have proper external fail over, Internet…
Do you have server(s) and a little bandwidth spare…..?
If you are like most companies, you will have an old/newish server knocking around and have some spare bandwidth too. Why not become a Web Host….. If you have some spare bandwidth and 1 or 2 servers, you could not only host your own site and be in full control of your sites DNS but…