When I finished part 4, I had a zone-based firewall set up with rules for traffic between each zone. Since I started with a locked-down configuration, how did I know what was getting blocked, especially those services that may run in the background without any user intervention? I solved this, and many other problems, by… Continue reading Adventures in Networking, Part 5: Splunking
Month: July 2014
Adventures in Networking, Part 4: Zone Defense
After part 3, I had a fully-functioning, switched network. So then why would I want to change that? Ah, because if it ain’t broke, you aren’t doing it right. As I stated before, ACL-based firewalls are limited, defining only inbound, outbound, and local (to the router) rules on each interface. I didn’t like that limitation,… Continue reading Adventures in Networking, Part 4: Zone Defense
Adventures in Networking, Part 3: Switch It Up
When I ended part 2, I had a functioning router with a WAN interface and two subnets. But unless you only have a couple of clients to connect to the router, how are you going to turn that one interface into many? Hubs are stupid and broadcast everything. A switch is better because it limits… Continue reading Adventures in Networking, Part 3: Switch It Up
Adventures in Networking, Part 2: Initial Setup
Part 1 was the intro; now let’s assume that you just bought your EdgeRouter Lite, unboxed it, and plugged it in. Now what? It’s not exactly a plug-and-play device. Fortunately, it’s not too hard to set it up, and there is a lot of help with EdgeOS if you need it.
Adventures in Networking, Part 1: Intro
I’m no CCNA, but computer networking is fun. I’ve always been the kind of person to configure everything by hand, build computers, hack up scripts to get things done, and so on. Years ago, I flashed my Linksys router with dd-wrt in order to get the most out of it (better performance mainly), but I… Continue reading Adventures in Networking, Part 1: Intro