Nis users cannot su

[inforeqd]

I've posted this question alot of places and thought I
might as well do it here also.

RHEL 3.0 NIS server (master), my clients/users can
authenticate fine and I have the home directory setup via
NFS from the server. Everything for authentication from
Linux clients to the Linux master is good. My only problem
is that when I open a terminal as a normal user and issue
the su command for root (su -) I get an incorrect password
and it will not let me su.

I've tried the wheel group also and it doesnt seem to help.

Anyone out there have this problem or know of other things
to try?
tia
infor

 

[ericbrunson]

Is sudo configured to authenticate via NIS?

 

[inforeqd]

I didnt configure sudo so I didnt think it was being used.
Is it used by default or something?

 

[ericbrunson]

If login is configured to use NIS, but sudo is looking at the local passwd/shadow files, then you're going to have issues if they get out of sync. Look at your pam configuration and see if the two services are using different authentication mechanisms.