Ubuntu root can not ssh login problem solved!
After installing Ubuntu Server 14.04and discovering that the root password is configured today,
Unexpectedly can not log in ssh, but su root is normal! Why?
There are restrictions in sshd_config in the original new version.
# vim / etc/ssh/sshd_config
# Authentication:
LoginGraceTime 120
# PermitRootLogin without-password # find it here and comment it
Change PermitRootLogin yes # to yes and restart ssh
StrictModes yes
# service ssh restart
# Tips: note here that the restart of / etc/init.d/ssh restart in this way is not successful.
