Hi, i have modified my /etc/su file so that it integrates Ldap, i got a small problem, whenever the root user do a $su - username1 password: it asks me a passwor, i hit 'enter' then i get the prompt; what is wrong with my su confg file ? # cat /etc/redhat-release Red Hat Enterprise Linux AS release 4 (Nahant Update 2) # uname -a Linux cluster2 2.6.9-22.0.1.ELsmp #1 SMP Tue Oct 18 18:39:02 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux # cat /etc/pam.d/su #%PAM-1.0 #pam_ldap Added by me auth sufficient pam_ldap.so account sufficient pam_ldap.so password sufficient pam_ldap.so auth sufficient /lib/security/$ISA/pam_rootok.so # Uncomment the following line to implicitly trust users in the "wheel" group. #auth sufficient /lib/security/$ISA/pam_wheel.so trust use_uid # Uncomment the following line to require a user to be in the "wheel" group. #auth required /lib/security/$ISA/pam_wheel.so use_uid auth required /lib/security/$ISA/pam_stack.so service=system-auth account required /lib/security/$ISA/pam_stack.so service=system-auth #added try_first_pass password required /lib/security/$ISA/pam_stack.so service=system-auth try_first_pass # pam_selinux.so close must be first session rule session required /lib/security/$ISA/pam_selinux.so close session required /lib/security/$ISA/pam_stack.so service=system-auth # pam_selinux.so open and pam_xauth must be last two session rules session required /lib/security/$ISA/pam_selinux.so open multiple session optional /lib/security/$ISA/pam_xauth.so -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster