Should Your Private Cloud Use a Single or a Dual Firewall?

– Brought to you by 2X Cloud Computing guest blogger Brien M. Posey –

Many private clouds are constructed in a way that allows clients to connect either locally or from the Internet. In the case of Internet connectivity, the Web Portal and Secure Client Gateway components that are used to facilitate the connection are almost always located behind a perimeter firewall. While the need for an Internet firewall is more or less undisputed, it is important to consider as to whether there might be advantages to implementing other firewalls within the private cloud infrastructure.

In order to answer this question, it is important to consider the nature of the inbound traffic. The Internet has been described as the most hostile environment on earth. The perimeter firewall’s job (at least in this case) is to block every TCP and UDP …