Ever running the Cisco VPN on your mac, and get this cryptic error: “Error 51: Unable to communicate with the VPN subsystem” Well, you’re not alone.  Here’s the quick fix: Quite the VPN client Fire up a Terminal window type: sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart Enter your admin password and hit return. Now open up the VPN [...]

I Love this command. It’s great for gathering information about a machine, when all you have is the IP address. The funny thing is that it’s got a very strange name, that I always have a hard time googling: nbtstat The name basically represents nbt = netBIOS, and stat = the state of the netBIOS. [...]