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 […]
Cisco ASA – Packet Capture
No matter how sophisticated networks become and the application layers that stack upon them, you’ll always need to know what’s going on under the waterline. If you’ve used Wireshark, then you’re probably be familiar with traffic capturing. The distinction here is that we’re not concerned with where to tap the wire (as our device is […]
IPsec VPN Configuration
Rather than reinvent the wheel with basic VPN theory or deep dive the intricacies of VPN; this falls somewhere in the middle. These steps are by no means a complete guide to creating a tunnel. Instead I hope to demonstrate how each configuration piece relates to the next and detail all the steps as succinctly […]