ipad What can remotely connect Linux server

As stated, there is such a software? Such as window putty or secure CRT on the class
There, ipad software can be used with vpn landing it?
Thank you!
Reply:
iphone & ipad looks like it can be set directly vpn!

Settings -> General -> Network -> vpn
Reply:
Certainly, cydia Tops MobileTerminal, then apt-get install ssh, finally ssh your-linux-server-ip can
Reply:
There are many in the itunes search SSH Terminal