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Can't Login to Redhat7.2 using nis ???

Hello all ,

I am running a redhat 7.2 machine with the regular pam rpms that came with the d
istribution .
The rpms are :
1) pam_krb5-1.46-1
2) pam_smb-1.1.6-2
3) pam-0.75-14
4) pam-devel-0.75-14

I am having a problem using nis authentication with this pam rpms ,
every time i try to login i am getting a message in /var/log/messages :
sshd(pam_unix)[4575]: authentication failure; logname= uid=0 euid=0 tty=ssh ru
ser= rhost=kuku.domain.com user=kuku1

I have to say that it doesnt metter what authentication method i use , i can use
telnet or ssh or any other application , i get the same response .

Both default authentication schems are enabled on my system from redhat installa
tion setup :
shadow & md5 .

My nis server is running shadow password authentication , but in the system it s
elf the md5 & shadow are both enabled .
The ypserv version is :

My pam.d/system-auth : ------------------------- auth required /lib/security/pam_env.so auth sufficient /lib/security/pam_unix.so like_auth nullok auth required /lib/security/pam_deny.so

account   required     /lib/security/pam_unix.so
session       required   /lib/security/pam_limits.so
session       required   /lib/security/pam_unix.so

password required /lib/security/pam_cracklib.so retry=3 type=
password sufficient /lib/security/pam_unix.so nullok use_authok md5 shadow nis
pasword required /lib/security/pam_deny.so

I must say that when i changed the pam_unix.so to pam_pwdb.so in each of the pam_unix.so
entries everything started to work . I guess it is because pam_pwdb use by defau
lt the shadow password authentication scheme .

So I don't understand why redhat6.2 for example use pam_unix.so module and every
thing works fine and under redhat7.2 it doesn't work ,,, when i actually install
ed the machine from scratch and using the regular pam module configured by the r
edhat installation setup to use both md5 & shadow & nis .

All my other machines are perffectly working except the 7.2 distribution .

I would really like an answer to this problem because i did my best to solve the
problem but
i still don't understand why it doesn't work .

Thanks .

the nis client is bounded on the machine and i have a /home dir so this is not the problem .

Best Regards
Nissim Penias .

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