Introducing the principles of defense in depth

Simply by connecting a device to a network and the internet, organizations are opening up a doorway for hackers to infiltrate their network and wreak havoc. There are many organizations that have a firewall on their network and so think that both their internal network and users are protected from threats on the internet. A firewall as the only network appliance deployed between the internal network and the internet is simply a single layer of security for the entire organization. Many people will ask the question, Isn't the firewall designed to filter malicious inbound and outbound traffic?

Many years ago, the answer would have been simply a solid yes. However, as hackers are always looking for new strategies to infiltrate a network, we cannot just rely on a single layer of security to safeguard our assets. The answer to the question is not an easy yes anymore simply because there are many traffic types that use insecure network...