Can't authenticate an NIS user. Please help!

[Kayode Odeyemi]

Hello experts,

I know my topic has been discussed all over the internet but I'm yet
to find a solution that works for me. I've been on this issue for over
a month, please don't ignore.

Below are dumps of necessary config files:

/etc/pam.d/common-auth
------------------------------------
# here are the per-package modules (the "Primary" block)
auth [success=1 default=ignore] pam_unix.so nullok_secure
#auth sufficient /lib/security/pam_nis.so item=user sense=allow
map=users.byname value=compsci
#auth requisite pam_unix.so
# here's the fallback if no module succeeds
auth requisite pam_deny.so
# prime the stack with a positive return value if there isn't one
already;
# this avoids us returning an error just because nothing sets a
success code
# since the modules above will each just jump around
auth required pam_permit.so
# and here are more per-package modules (the "Additional" block)
auth optional pam_ecryptfs.so unwrap
# end of pam-auth-update config

/etc/nsswitch.conf
--------------------------


libc6
------
Package: libc6
Priority: required
Section: libs
Installed-Size: 10472
Maintainer: Ubuntu Developers <ubuntu-dev...@lists.ubuntu.com>
Original-Maintainer: GNU Libc Maintainers <debian-
gl...@lists.debian.org>
Architecture: amd64
Source: eglibc
Version: 2.13-20ubuntu5.1
Replaces: belocs-locales-bin, libc6-amd64
Provides: glibc-2.13-1
Depends: libc-bin (= 2.13-20ubuntu5.1), libgcc1, tzdata
Suggests: glibc-doc, debconf | debconf-2.0, locales
Conflicts: belocs-locales-bin, libc6-amd64, prelink (<< 0.0.20090925),
tzdata (<< 2007k-1), tzdata-etch
Breaks: nscd (<< 2.13)
Filename: pool/main/e/eglibc/libc6_2.13-20ubuntu5.1_amd64.deb
Size: 4148800
MD5sum: fa65d4b84a0b911c20147f10d18aabd3
SHA1: bdeb94bb7589375ffa8b856892820a793d061dfd
SHA256:
25f27e632e41dbd7c3032b28d0fbeac7972fdf13d74885252d01de5f9755cd01
Description-en: Embedded GNU C Library: Shared libraries
Contains the standard libraries that are used by nearly all programs
on
the system. This package includes shared versions of the standard C
library
and the standard math library, as well as many others.
Multi-Arch: same
Homepage: http://www.eglibc.org
Description-md5: 5089b4da6684d7432ab618fb5b79cec5
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 18m
Task: minimal

/etc/pam.d/common-password
--------------------------------------------
# here are the per-package modules (the "Primary" block)
password [success=1 default=ignore] pam_unix.so obscure sha512 nis
#password required pam_unix.so
# here's the fallback if no module succeeds
password requisite pam_deny.so
# prime the stack with a positive return value if there isn't one
already;
# this avoids us returning an error just because nothing sets a
success code
# since the modules above will each just jump around
password required pam_permit.so
# and here are more per-package modules (the "Additional" block)
password optional pam_ecryptfs.so
# end of pam-auth-update config

rpcinfo
----------
program vers proto port service
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 57061 status
100024 1 tcp 50122 status
100007 2 udp 767 ypbind
100007 1 udp 767 ypbind
100007 2 tcp 768 ypbind
100007 1 tcp 768 ypbind

distro
--------
Linux appserver 3.0.0-17-server #30-Ubuntu SMP Thu Mar 8 22:15:30 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux

auth.log
-----------
May 31 17:39:45 prisa-appserver auth: pam_unix(dovecot:auth):
authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=dupe
rhost=192.168.128.11 user=dupe
May 31 17:40:41 auth: last message repeated 2 times
May 31 17:42:53 prisa-appserver sudo: pam_unix(sudo:auth):
authentication failure; logname=prisa uid=0 euid=0 tty=/dev/pts/0
ruser=prisa rhost= user=prisa
May 31 17:43:06 prisa-appserver sudo: prisa : TTY=pts/0 ; PWD=/home/
prisa ; USER=root ; COMMAND=/usr/bin/apt-cache show libc6
May 31 17:44:24 prisa-appserver sudo: prisa : TTY=tty1 ; PWD=/home/
prisa ; USER=root ; COMMAND=/usr/bin/apt-cache show libc6
May 31 17:45:14 prisa-appserver su[2274]: pam_unix(su:auth):
authentication failure; logname=prisa uid=1000 euid=0 tty=/dev/tty1
ruser=prisa rhost= user=femmy
May 31 17:45:16 prisa-appserver su[2274]: pam_authenticate:
Authentication failure
May 31 17:45:16 prisa-appserver su[2274]: FAILED su for femmy by prisa
May 31 17:45:16 prisa-appserver su[2274]: - /dev/tty1 prisa:femmy

nsswitch.conf
--------------------
\# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed,
try:
# `info libc "Name Service Switch"' for information about this file.

passwd: compat nis
group: compat nis
shadow: compat nis

#passwd_compat: nis
#group_compat: nis
#shadow_compat: nis
#
#shadow files nis

hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 nis
#hosts: files dns nis
#hosts: nis files dns
networks: files

protocols: nis files
services: nis files
ethers: nis files
rpc: nis files
netmasks: nis files
netgroup: nis
bootparams: nis files
publickey: nis files

automount: files nis
aliases: files nis

Thanks for reading.