LAB Linux in heterogenen Netzen File Server

Ziel

• Wir wollen einen Filseserver auf Linux aufsetzen
• Dieser soll als Domain Member agieren.

Aus dem Debian Template einen Klon erstellen

• Name: fileserver
• Netz: dmz
• HOSTS: fileserver.lab34.linuggs.de
• IPv4: 172.26.54.7/24
• GWv4: 172.26.54.1
• NSv4: 172.26.54.2
• DOM: lab34.linuggs.de
• HOSTS: fileserver.lab34.linuggs.de
• IPv6: 2a02:24d8:71:3036::7/64
• GWv6: 2a02:24d8:71:3036::1
• NSv6: 2a02:24d8:71:3036::2
• DOM: lab34.linuggs.de

samba4 installieren

• apt install samba krb5-config krb5-user winbind libpam-winbind libnss-winbind

Update der Pam

• pam-auth-update

/etc/samba/smb.conf

[global]
  workgroup = lab34
  realm = lab34.linuggs.de
  security = ADS

  log level = 1 winbind:5

  winbind refresh tickets = Yes
  vfs objects = acl_xattr
  map acl inherit = Yes
  store dos attributes = Yes

  winbind use default domain = yes
  winbind nss info = template

  winbind enum users = yes
  winbind enum groups = yes

  idmap config * : backend = tdb
  idmap config * : range = 3000-7999

  idmap config lab34.linuggs.de : backend = rid
  idmap config lab34.linuggs.de : range = 10000-99999

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

  # Mapping domain Administrator to local root
  username map = /etc/samba/user.map

  kerberos method = dedicated keytab
  dedicated keytab file = /etc/krb5.keytab

/etc/krb5.conf

[libdefaults]
      default_realm = LAB34.LINUGGS.DE
      dns_lookup_realm = true
      dns_lookup_kdc = true

[realms]
      LAB34.LINUGGS.DE = {
            kdc = win2022.lab34.linuggs.de
            admin_server = win2022.lab34.linuggs.de
      }

[domain_realm]
      .lab34.linuggs.de = LAB34.LINUGGS.DE
      lab34.linuggs.de = LAB34.LINUGGS.DE

Initiieren Sie ein Kerberos-Ticket

• kinit administrator

List

• klist

Ticket cache: FILE:/tmp/krb5cc_0
Default principal: administrator@LAB34.LINUGGS.DE 

Valid starting       Expires              Service principal
10/02/2024 10:49:53  10/02/2024 20:49:53  krbtgt/LAB34.LINUGGS.DE@LAB34.LINUGGS.DE
	renew until 10/03/2024 10:49:47

Erstellen Sie eine Kerberos-Keytab-Datei

• net ads keytab create -U administrator

Treten Sie der AD-Domäne bei

• net ads join -U administrator

domaine beitreten

root@lang:~# net ads join -U administrator
Enter administrator's password:
Using short domain name -- LINUGGS
Joined 'LANG' to dns domain 'linuggs.lan'

/etc/nsswitch.conf ändern

passwd:         files systemd winbind
group:          files systemd winbind

services neustarten

• systemctl restart smbd
• systemctl restart nmbd
• systemctl restart winbind

ist winbind is "pingbar

• wbinfo -p

Ping to winbindd succeeded

anzeigen der userliste

• wbinfo -u

Administrator
Guest
krbtgt

anzeigen der passwd

hier solten nun benutzer aus der ad autauchen

• getent passwd

 
benutzer03:*:11107:10513::/home/benutzer03:/bin/bash
administrator:*:10500:10513::/home/administrator:/bin/bash
benutzer04:*:11108:10513::/home/benutzer04:/bin/bash
benutzer01:*:11105:10513::/home/benutzer01:/bin/bash
krbtgt:*:10502:10513::/home/krbtgt:/bin/bash
benutzer02:*:11106:10513::/home/benutzer02:/bin/bash
guest:*:10501:10513::/home/guest:/bin/bash
thomas:*:11104:10513::/home/thomas:/bin/bash

• https://help.ubuntu.com/community/ActiveDirectoryWinbindHowto

LIBPAM

• pam samba winbind
• http://trabauer.com/?p=383