-# be allowed through the ChallengeResponseAuthentication mechanism.
-# Depending on your PAM configuration, this may bypass the setting of
-# PasswordAuthentication, PermitEmptyPasswords, and
-# "PermitRootLogin without-password". If you just want the PAM account and
-# session checks to run without PAM authentication, then enable this but set
-# ChallengeResponseAuthentication=no
-UsePAM yes
+# be allowed through the ChallengeResponseAuthentication and
+# PasswordAuthentication. Depending on your PAM configuration,
+# PAM authentication via ChallengeResponseAuthentication may bypass
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and ChallengeResponseAuthentication to 'no'.
+#UsePAM yes