Configure Ezeelogin to authenticate using Windows_AD / OpenLDAP in Debian?

362 Manu Chacko May 16, 2022 Tweaks & Configuration 1603

Configure Ezeelogin to authenticate using Windows_AD / OpenLDAP (Pam-Ldap) in Debian?

Integration of WINDOWS-AD&Openldap (PAM-LDAP) in Debian

Make sure that PHP-LDAP extension is installed on the server

root@jumpserver:~# apt-get install php5-ldap/php7-ldap /php-ldap

1. Login to Web-GUI > open settings > Ldap

Add the details of LDAP configurations & Check WINDOWS ACTIVE DIRECTORY if you are authenticating with Windows AD & Save

2. open Settings > General > Authentication > change webpanel authentication to LDAP & Check External SSH Auth

3. Select the LDAP users and import them to Ezeelogin

You can confirm the imported LDAP users were listed in Users

Now you can log in to Ezeelogin with LDAP user in ezeelogin GUI

After importing the users to Ezeelogin, log in with the user and set up security code for the user under Account > Password > New Security Code.

Skip 4th & 5th step if you are configuring OpenLDAP

4. Make sure that UNIX ATTRIBUTES is enabled on WINDOWS(2003,2008,2012) SERVER

You do not need to install unix attributes on windows 10 and windows 2016 server OS

Enter the below command

Dism.exe/online/enable-feature /featurename:nis /all

Reboot the server to complete the installation

5. Make sure to add the values for UID, GID, Login Shell, Home Directory

Win 2008 Unix Attributes

For Window 2016 AD user set the attributes such as uidNumber = 10001 , gidNumber = 12001 , unixHomeDirectory = /home/jake , loginShell=/usr/local/bin/ezsh

NOTE: For the Unix Attributes uidNumber, gidNumber, loginShell to be visible, make sure to click on the Filter button and select ONLY " Show Only Writable Attributes" as shown below.

Let's configure PAM_LDAP Authentication for SSH

1. Install pam-LDAP module by the following command

root@jumpserver:~# apt install libnss-ldap libpam-ldap ldap-utils nscd

2. Enter LDAP URI, Base dn , select Ldap version 3 , Bindpassword and BInddn on prompts

You can reconfigure the settings with the following command

root@jumpserver:~# dpkg-reconfigure libnss-ldap

Skip the 3rd step if you are configuring OpenLDAP

3. Add Active Directory Mappings to /etc/libnss-ldap.conf

Search for RF 2307 (AD) mapping & add or uncomment the following lines

root@jumpserver:~# nano /etc/libnss-ldap.conf
 
nss_map_objectclass posixAccount user
nss_map_attribute uid sAMAccountName
nss_map_attribute homeDirectory unixHomeDirectory
nss_override_attribute_value loginShell /usr/local/bin/ezsh

4. Append 'ldap' to password,group & shadow in /etc/nsswitch.conf

root@jumpserver:~# cat /etc/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: files systemd ldap
group: files systemd  ldap
shadow: files  ldap
gshadow: files
 
hosts: files mdns4_minimal [NOTFOUND=return] dns myhostname
networks: files
 
protocols: db files
services: db files
ethers: db files
rpc: db files
 
netgroup: nis
 

5. Enable autocreate home directory on login by adding the following to /etc/pam.d/common-session by the following command

root@jumpserver:~# echo "session optional pam_mkhomedir.so skel=/etc/skel umask=077" >> /etc/pam.d/common-session

6. Edit /etc/pam.d/common-password and Remove the option 'use_authtok' on the password 'pam_ldap' module configuraiton as below.

root@jumpserver:~# vi /etc/pam.d/common-password
# Remove the option 'use_authtok' on the password 'pam_ldap' module configuraiton as below.
password [success=1 user_unknown=ignore default=die] pam_ldap.so  try_first_pass

7. Restart nscd service

root@jumpserver:~# service nscd restart  

Ensure the login shell of ldap user is /usr/local/bin/ezsh

Now run the id / finger command and see whether you are able get AD user details

[root@jumpserver ~]# finger jake
Login: jake           Name: jake t
Directory: /home/jake     Shell: /usr/local/bin/ezsh
Last login Wed Jun 13 05:02 (EDT) on pts/1 from 10.1.1.13
No mail.
No Plan.
[root@jumpserver ~]# id jake
uid=10001(jake) gid=120001(domain users) groups=1547600513(domain users)

Run an ldapsearch to check the values returned from your AD server as follows. This is used for troubleshooting. Ensure that it returns the values of uid,gid,home directory and login shell.

[root@jumpserver]# ldapsearch -x -LLL -E pr=200/noprompt -h 10.11.1.164 -D "[email protected]" -w admod_2016 -b "cn=jake,cn=users,dc=ad2016,dc=admod,dc=net"
 
dn: CN=jake,CN=Users,DC=ad2016,DC=admod,DC=net
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: jake
givenName: jake
distinguishedName: CN=jake,CN=Users,DC=ad2016,DC=admod,DC=net
instanceType: 4
whenCreated: 20180703063304.0Z
whenChanged: 20180703063554.0Z
displayName: jake
uSNCreated: 45128
uSNChanged: 45136
name: jake
objectGUID:: ldpkFlnRs0O6irphlTq1AA==
userAccountControl: 512
badPwdCount: 0
codePage: 0
countryCode: 0
badPasswordTime: 0
lastLogoff: 0
lastLogon: 0
pwdLastSet: 131750731848783837
primaryGroupID: 513
objectSid:: AQUAAAAAAAUVAAAAmhs/bgMv2mlWATm4VQQAAA==
accountExpires: 9223372036854775807
logonCount: 0
sAMAccountName: jake
sAMAccountType: 805306368
userPrincipalName: [email protected]
objectCategory: CN=Person,CN=Schema,CN=Configuration,DC=ad2016,DC=admod,DC=net
dSCorePropagationData: 16010101000000.0Z
uidNumber: 10001
gidNumber: 12000
unixHomeDirectory: /home/jake
loginShell: /usr/local/bin/ezsh
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