Solve the problem of slow password input when SCP/ssh prompts

I passed the test on my own Ubuntu 9.10. Every time I SSH to a server, it is very slow to wait for the password to be entered. Later, a colleague introduced an sshpass tool that automatically entered the password, it takes about 20 seconds to log on to windows. You can enter the password when you log on to Windows.

Find the reason. It turns out to be a gssapiauthentication permission verification. Refer to the Wikipedia introduction:

TheGeneric Security Services application program interface(Gssapi, AlsoGSS-API) Is an [url = ** your programming interface [/url] for programs to access [url = ** en.wikipedia.org/wiki/security#security#/url] services.
The gssapi is an [url = ** en.wikipedia.org/wiki/ietf?ietf=/url] standard that addresses the problem of your similar but incompatible security services in use today.

The last line is "but incompatible security services in use today". It seems that it is not safe for the moment.

$ Sudo Vim/etc/ssh/ssh_config (Change gssapiauthenticationn from yes to no)
Gssapiauthentication No

Alternatively, you can add the parameter-O gssapiauthentication = No each time. The login password input speed is the same as that on Windows.