I recently picked up a RB850GX2 from my favorite Mikrotik retailer, r0c-n0c. It’s a dual-core PowerPC board with five ethernet ports and some decent performance for the price. I still have the RB493G in a colocation and I usually connect my home and the colo via OpenVPN or IPSec. Networking is not one of my best skills and I’m always looking to learn more about it when I can. I decided to try out a GRE tunnel on top of IPSec this time around.