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Problem faced while doing SSH

Error Encountered :

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
74:ed:09:3c:46:1f:5f:8a:8a:86:d5:80:6b:6e:e4:75.
Please contact your system administrator.
Add correct host key in /home/USERNAME/.ssh/known_hosts to get rid of this message.
Offending key in /home/USERNAME/.ssh/known_hosts:3
RSA host key for 192.168.0.48 has changed and you have requested strict checking.
Host key verification failed.



Solution :

vi /home/USERNAME/.ssh/known_hosts

and just delete the contents of the file completely, to get rid of old keys which no longer exist, or turn off strict checking in your SSH configuration as the error message indicates.
If you still cannot connect you should either contact your local system administrator and ask them to fix the problem or try connecting from a PC using the software referenced on the Grid website.

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