--- sshd_config
+++ sshd_config
@@ -53,7 +53,7 @@
 #IgnoreRhosts yes
 
 # To disable tunneled clear text passwords, change to no here!
-#PasswordAuthentication yes
+PasswordAuthentication no
 #PermitEmptyPasswords no
 
 # Change to no to disable s/key passwords
@@ -78,7 +78,7 @@
 # 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 no
+UsePAM yes
 
 #AllowTcpForwarding yes
 #GatewayPorts no