Hi,

I have a centos 5.4 server that uses NIS for user authentication. I'd like to restrict login to a list of specific NIS users. I tried modifying access.conf to reflect the required changes, I did a reboot to restart all services but no luck. Changes to /etc/security/access.conf are

+ : root : ALL
+ : user1 : ALL
+ : user2 : ALL
+ : user3 : ALL
+ : user4 : ALL

# All other users should be denied to get access from all sources.
- : ALL : ALL

am i missing something here ?

That looks good to me, is pam_access.so configured to read access.conf in your /etc/pam.d/system-auth file?

obviously not, here's a paste of system-auth

#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authconfig is run.
auth required pam_env.so
auth sufficient pam_unix.so nullok try_first_pass
auth requisite pam_succeed_if.so uid >= 500 quiet
auth required pam_deny.so

account required pam_unix.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so

password requisite pam_cracklib.so try_first_pass retry=3
password sufficient pam_unix.so md5 shadow nis nullok try_first_pass use_authtok
password required pam_deny.so

session optional pam_keyinit.so revoke
session required pam_limits.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so


how can I configure it to read access.conf?

I think I got it, just to confirm, I added the following line to system-auth

account required pam_access.so