With the whole of the networking worldmoving toward inhabiting a single global village, we inevitablyhave to start thinking about locking our doors and bolting ourwindows. It has to be recognized that ...

The ufw (uncomplicated firewall) represents a serious simplification to iptables and, in the years that it’s been available, has become the default firewall on systems such as Ubuntu and Debian. And, ...

Firewall rules control what traffic is allowed to enter an interface on the firewall. Once traffic is passed on the interface it enters an entry in the state table is created. A state table entry ...

Few businesses would choose to operate without a series of locks, alarms and security cameras to protect their premises and inventory from intrusions and theft. Protecting your computer systems is ...

Next, let's configure a simple firewall. For the sake of simplicity, I am going to allow only SSH and HTTP traffic onto my machine. This means allowing ports 22 and 80. The first command enables the ...

No doubt, you’ve heard the term “firewall” in regard to computing, but do you know what it is? When it comes to security, we should all be educated consumers, so this is an introduction to the basic ...