We can administer Linux box with an iPad using SSH & VNC. Recommended OS for iPad 4.x or greater, though it works on previous versions, you cannot use multitasking feature of iPad if OS is less than 4.x
Following are the steps to follow:
- Download any SSH client from Apple's App Store
- Generate SSH key, setup tunnel and X Server
- Choose KVM server as connection, use IP, hostname and username from your Linux box and enter password when you are prompted.