1)
PermitEmptyPasswords is set to No
\# grep "^PermitEmptyPasswords" /etc/ssh/sshd_config
PermitEmptyPasswords no
If there is no output does it implies 'As parameter was not set mean system will also not accepted emptypassword.'
2)
Users is not allowed to set Environment Options
# grep PermitUserEnvironment /etc/ssh/sshd_config
PermitUserEnvironment no
Similiarly if there is no output does it implies that : As the environment was not set mean user restrict from environment option.