Take the tour ×  This is frustrating. I am often able to login
with a root password. Then I cannot login again. However, I am
still logged in. Hence my password must be correct.  I changed
the root password with passwd. It works again. Then sometimes
latter this happens again.  It's as if the root password changes
all the time automatically. Did someone hack my server?
share|improve this question Just a short note: a password change
does not close the existing sessions. The fact you're still
logged in does not mean that the password at any given time is
the same that you have used to log in. –  Leonid Jan 4 at 5:21
It's not that the password keeps changing. It seems that server
reject all root login for a few hours and stuff. –  Jim Thio Sep
27 at 12:03 /var/messages are indeed full with so many failed
login attempt. –  Jim Thio Sep 27 at 12:03 add comment  1 Answer
up vote 1 down vote accepted  Assuming someone is playing around
with your box or some kind of practical joke, and they did not
cover their tra