How to Fix " KERBEROS_V4 rejected as an authentication type"

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These are some of the errors which I came across while working on FTP server along with the solutions.

Error 1:KERBEROS_V4 rejected as an authentication type
# ftp 10.10.10.90
Connected to 10.10.10.90
220 (vsFTPd 2.0.1)
KERBEROS_V4 rejected as an authentication type

Solution:# which ftp
/usr/kerberos/bin/ftp
Make an alias entry for ftp
# alias ftp='/usr/bin/ftp'

To make the change permanent i.e.even after restart
# vi /root/.bashrc
alias ftp='/usr/bin/ftp'

Error 2:550 Create directory operation failed

Solution:

Make sure the location where the user is trying to create a file or directory is having write permission for that user. 

This error simply means the user is not permitted to create any file on the given location.