The CIDR search is a quick way to assess a netblock.
189 karma · joined May 22, 2012
These days, I use Ubuntu everywhere including here - http://hackertarget.com. It is just easier to quickly get up and running (not because its Free I could be using CentOS).
So good job Red Hat, and good job Ubuntu!
Get a copy and start scanning, don't just scan your web servers and Internet gateway. Have a crack at your Internet connected TV, WII and any other device that has an IP Address. If nothing else its fun. :)