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…
Month: July 2011
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…
Are you a “Hacker”…? If so check out Nottinghack…..
What is a hacker… Contra to popular belief the word “Hacker” does not implicitly mean someone who sits there trying to gain access to a computer system. A “Hacker” is someone that spends vast amounts of time devoted to one particular task or project, this task or project could be gaining access to a computer system or just…
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…
802.1Q VLAN Tagging in Ubuntu…
To make use of IEEE 802.1Q VLAN tagging capabilities in Ubuntu you must first install the user mode programs for Virtual LAN support: sudo apt-get install vlan Next the 8021q kernel module must be loaded to enable VLAN support on a kernel level: sudo modprobe 8021q A quick review of lsmod will ensure the kernel module was loaded: lsmod…
Clustering with CentOS 5.5 and “luci”….
Ok, so i deal a lot with clustering of servers or “Nodes” and i will briefly show a really simple cluster which only has a shared or “Highly available” IP address in the case of one of the Nodes failing the shared IP address will still be up and pingable if you where to combine this…
Installing VirtualBox Guest Additions on CentOS 5.5…..
At the moment i keep being asked on my youtube channel how to install Guest Additions in CentOS 5.5…. so i thought i would put this quick tutorial together. In your CentOS Terminal, do a “su” and then follow the steps : 1. Attach the Gues Additions ISO to your CentOS 5.5 X86 VM 2….