Despite being all but EOL the Cisco 1800 line has some extremely versatile little devices with a good price point, which explains why you’ll see a fair number of them still kicking around. Sure they don’t have all the bells and whistle of some other manufactures, but the Cisco 1800 (and now 1900) stays true […]
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 […]
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 […]