_This is a repost for formatting_

Winbind-Solaris Documentation Naag Mummaneni getnag at rediffmail.com Thu May 2 11:10:54 GMT 2002

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I just configured my Solaris box to logon to my Windows 2k Domain after working > on it for three days.I am sorry to say that I have found no documentation for > setting up Samba-winbind on solaris.And I feel that a Prestigious opensource > project like Samba shouldnt be blamed for this.So I modified the documentation > that come with samba & prepared this one for “solaris” so that no other > administrator will face problems that I did. I hope the Samba group will put this > documentation part in the distribution.Please find the attached doc file for the > documentation.

Thanks Naag Mummaneni(getnag at rediffmail.com) ——————————————————–

Installation and Configuration of Winbind on Solaris.

This HOWTO describes how to get winbind services up and running to control access and authenticate users on your Solaris box using the winbind services which come with SAMBA 2.2.x latest CVS Checkout.Make sure you are using the latest Samba 2.2.x cvs checkout as other versions come with a lots of bugs regarding winbind .And even the Latest Samba Stable Release is also not an exception to this.

Introduction This HOWTO describes the procedures used to get winbind up and running on a Solaris system. Winbind is capable of providing access and authentication control for Windows Domain users through an NT or Win2K PDC for ‘regular’ services, such as telnet and ftp, as well for SAMBA services. Why should I to this? ?h?n This allows the SAMBA administrator to rely on the authentication mechanisms on the NT/Win2K PDC for the authentication of domain members. NT/Win2K users no longer need to have separate accounts on the SAMBA server. Who should be reading this document? ?h?n This HOWTO is designed for system administrators. If you are implementing SAMBA on a file server and wish to (fairly easily) integrate existing NT/Win2K users from your PDC onto the SAMBA server, this HOWTO is for you.

Requirements If you have a samba configuration file that you are currently using… BACK IT UP! If your system already uses PAM, back up the /etc/pam.conf file ! If you haven’t already made a boot disk, MAKEONE NOW! Messing with the pam configuration file can make it nearly impossible to log in to yourmachine. That’s why you want to be able to boot back into your machine in single user mode and restore your /etc/pam.conf back to the original state they were in if you get frustrated with the way things are going. ;-) Please refer to the main SAMBA web page or, better yet, your closest SAMBA mirror site for instructions on downloading the source code of Samba 2.2.x from the SAMBA CVS repository. To allow Domain users the ability to access SAMBA shares and files, as well as potentially other services provided by your SAMBA machine, PAM (pluggable authentication modules) must be setup properly on your machine. In order to compile the winbind modules, you should have at least the pam libraries resident on your system. Solaris 7/8 has its pam modules coming with the distribution itself.

Testing Things Out Before starting, it is probably best to kill off all the SAMBA related daemons running on your server. Kill off all smbd, nmbd, and winbindd processes that may be running.

Configure and compile SAMBA The configuration and compilation of SAMBA is pretty straightforward. The first three steps may not be necessary depending upon whether or not you have previously built the Samba binaries. root# autoconf root# make clean root# rm config.cache root# ./configure –with-winbind –with-pam root# make root# make install

This will, by default, install SAMBA in /usr/local/samba. See the main SAMBA documentation if you want to install SAMBA somewhere else. It will also build the winbindd executable and libraries.

Configure nsswitch.conf and the winbind libraries The libraries needed to run the winbindd daemon through nsswitch need to be copied to their proper locations, so root# cp ../samba/source/nsswitch/libnss_winbind.so /usr/lib I also found it necessary to make the following symbolic links: root# ln -s /usr/lib/libnss_winbind.so /usr/lib/libnss_winbind.so.1 root# ln -s /usr/lib/libnss_winbind.so /usr/lib/libnss_winbind.so.2 root# ln -s /usr/lib/libnss_winbind.so /usr/lib/nss_winbind.so.1 root# ln -s /usr/lib/libnss_winbind.so /usr/lib/nss_winbind.so.2

Now, as root you need to edit /etc/nsswitch.conf to allow user and group entries to be visible from the winbindd daemon. My /etc/nsswitch.conf file look like this after editing: passwd: files winbind group: files winbind

Configure smb.conf Several parameters are needed in the smb.conf file to control the behavior of winbindd. Configure smb.conf These are described in more detail in the winbindd(8) man page. My smb.conf file was modified to include the following entries in the [global] section: [global]

The previous documentation says to as the “winbind seperator “ #directive also but it is no longer supported.

use uids from 10000 to 20000 for domain users

winbind uid = 10000-20000

use gids from 10000 to 20000 for domain groups

winbind gid = 10000-20000

allow enumeration of winbind users and groups

winbind enum users = yes winbind enum groups = yes

give winbind users a real shell (only needed if they have telnet access)

template homedir = /home/winnt/%D/%U template shell = /bin/bash

Join the SAMBA server to the PDC domain Enter the following command to make the SAMBA server join the PDC domain, where DOMAIN is the name of your Windows domain and Administrator is a domain user who has administrative privileges in the domain. root# /usr/local/samba/bin/smbpasswd -j DOMAIN -r PDC -U Administrator The proper response to the command should be: “Joined the domain DOMAIN” where DOMAIN is your DOMAIN name.

Start up the winbindd daemon and test it! Eventually, you will want to modify your smb startup script to automatically invoke the winbindd daemon when the other parts of SAMBA start, but it is possible to test out just the winbind portion first. To start up winbind services, enter the following command as root: root# /usr/local/samba/bin/winbindd I’m always paranoid and like to make sure the daemon is really running… root# ps -ae | grep winbindd This command should produce output like this, if the daemon is running 3025 ? 00:00:00 winbindd Now… for the real test, try to get some information about the users on your PDC root# /usr/local/samba/bin/wbinfo -u This should echo back a list of users on your Windows users on your PDC. For example, I get the following response: CEO\Administrator CEO\burdell CEO\Guest CEO\jt-ad CEO\krbtgt CEO\TsInternetUser

root# /usr/local/samba/bin/wbinfo -g CEO\Domain Admins CEO\Domain Users CEO\Domain Guests CEO\Domain Computers CEO\Domain Controllers CEO\Cert Publishers CEO\Schema Admins CEO\Enterprise Admins CEO\Group Policy Creator Owners The function ‘getent’ can now be used to get unified lists of both local and PDC users and groups. Try the following command: root# getent passwd You should get a list that looks like your /etc/passwd list followed by the domain users with their new uids, gids, home directories and default shells. The same thing can be done for groups with the command root# getent group

Fix the /etc/rc.d/init.d/samba.server startup files The winbindd daemon needs to start up after the smbd and nmbd daemons are running. To accomplish this task, you need to modify the /etc/init.d/samba.server script to add commands to invoke this daemon in the proper sequence. My /etc/init.d/samba.server file starts up smbd, nmbd, and winbindd from the /usr/local/samba/bin directory directly. samba.server if [ ! -d /usr/bin ] then # /usr not mounted exit fi

killproc() { # kill the named process(es) pid=/usr/bin/ps -e | /usr/bin/grep -w $1 | /usr/bin/sed -e 's/^ *//' -e 's/ .*//' [ “$pid” != “” ] && kill $pid }

Start/stop processes required for samba server

case “$1” in

‘start’) #

Edit these lines to suit your installation (paths, workgroup, host)

# echo Starting SMBD /usr/local/samba/bin/smbd -D #-s /usr/local/samba/smb.conf echo Starting NMBD /usr/local/samba/bin/nmbd -D #-l /usr/local/samba/var/log -s /usr/local/samba/smb.conf echo Starting Winbind Daemon /usr/local/samba/bin/winbindd ;; ‘stop’) killproc nmbd killproc smbd killproc winbindd ;; *) echo “Usage: /etc/init.d/samba.server { start | stop }” ;; esac

If you restart the smbd, nmbd, and winbindd daemons at this point, you should be able to connect to the samba server as a domain member just as if you were a local user.

Configure Winbind and PAM If you have made it this far, you know that winbindd and samba are working together. If you want to use winbind to provide authentication for other services, keep reading. The pam configuration file need to be altered in this step. (Did you remember to make backups of your original /etc/pam.conf file? If not, do it now.) You will need a pam module to use winbindd with these other services. This module will be compiled in the ../source/nsswitch directory by default when we used ./configure –with-pam option. root# make nsswitch/pam_winbind.so from the ../source directory. The pam_winbind.so file should be copied to the location of your other pam security modules. On my Solaris 8, this was the /usr/lib/security directory. root# cp ../samba/source/nsswitch/pam_winbind.so /usr/lib/security

The /etc/pam.conf need to be changed. I changed this file so that my Domain users can logon both locally as well as telnet.The following are the changes that I made.You can customize the pam.conf file as per your requirements,but be sure of those changes because in the worst case it will leave your system nearly impossible to boot.

# #ident “@(#)pam.conf 1.14 99/09/16 SMI” #

Copyright (c) 1996-1999, Sun Microsystems, Inc.

All Rights Reserved.


PAM configuration


Authentication management

# login auth required /usr/lib/security/pam_winbind.so login auth required /usr/lib/security/$ISA/pam_unix.so.1 try_first_pass login auth required /usr/lib/security/$ISA/pam_dial_auth.so.1 try_first_pass # rlogin auth sufficient /usr/lib/security/pam_winbind.so rlogin auth sufficient /usr/lib/security/$ISA/pam_rhosts_auth.so.1 rlogin auth required /usr/lib/security/$ISA/pam_unix.so.1 try_first_pass # dtlogin auth sufficient /usr/lib/security/pam_winbind.so dtlogin auth required /usr/lib/security/$ISA/pam_unix.so.1 try_first_pass # rsh auth required /usr/lib/security/$ISA/pam_rhosts_auth.so.1 other auth sufficient /usr/lib/security/pam_winbind.so other auth required /usr/lib/security/$ISA/pam_unix.so.1 try_first_pass #

Account management

# login account sufficient /usr/lib/security/pam_winbind.so login account requisite /usr/lib/security/$ISA/pam_roles.so.1 login account required /usr/lib/security/$ISA/pam_unix.so.1 # dtlogin account sufficient /usr/lib/security/pam_winbind.so dtlogin account requisite /usr/lib/security/$ISA/pam_roles.so.1 dtlogin account required /usr/lib/security/$ISA/pam_unix.so.1 # other account sufficient /usr/lib/security/pam_winbind.so other account requisite /usr/lib/security/$ISA/pam_roles.so.1 other account required /usr/lib/security/$ISA/pam_unix.so.1 #

Session management

# other session required /usr/lib/security/$ISA/pam_unix.so.1 #

Password management

# #other password sufficient /usr/lib/security/pam_winbind.so other password required /usr/lib/security/$ISA/pam_unix.so.1 dtsession auth required /usr/lib/security/$ISA/pam_unix.so.1 #

Support for Kerberos V5 authentication (uncomment to use Kerberos)

# #rlogin auth optional /usr/lib/security/$ISA/pam_krb5.so.1 try_first_pass #login auth optional /usr/lib/security/$ISA/pam_krb5.so.1 try_first_pass #dtlogin auth optional /usr/lib/security/$ISA/pam_krb5.so.1 try_first_pass #other auth optional /usr/lib/security/$ISA/pam_krb5.so.1 try_first_pass #dtlogin account optional /usr/lib/security/$ISA/pam_krb5.so.1 #other account optional /usr/lib/security/$ISA/pam_krb5.so.1 #other session optional /usr/lib/security/$ISA/pam_krb5.so.1 #other password optional /usr/lib/security/$ISA/pam_krb5.so.1 try_first_pass

I also added a try_first_pass line after the winbind.so line to get rid of annoying double prompts for passwords.

Now restart your Samba & try connecting through your application that you configured in the pam.conf.

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