Tag: DMZ

Dual Firewall DMZ – Revisited

Two years ago I wrote regarding Dual Firewall DMZ design. While (I hope) it does well to illustrate how a DMZ can operate, admittedly its a clumsy design and not one I’d recommend. First and foremost, DMZ design has to meet the needs of implementation; there is no one-size-fits-all solution. That said, I want to […]


Dual Firewall DMZ

Creation of a DMZ allows you to place externally-facing services in an isolated security zone so that the internal network is not exposed to the outside world. Today we’ll take the textbook DMZ example one step further by sub-diving the DMZ into external and internal zones. Instead of a single firewall and DMZ switch we’ll […]