Cheat Sheets from Packetlife.net
My friend Josh over at blindhog.net has found a collection of cheat sheet gems for the network dude(tte). There’s sheets on BGP, OSPF, Subnetting, QoS, connector types, and more. Check it out.
GRE Tunnels and Encryption
GRE tunnels rock. They are interfaces on a router that are used to “connect” to another router somewhere on your LAN, your WAN, the Internet, wherever. The most popular use for them is for router-to-router VPNs.
I’ll let my friend Josh from blindhog.net show you how to do it. He’s got a video on how to configure the tunnels, and another on how to set it up for VPN.