Samba Active Directory installieren

Samba AD DC

Hostname ändern

hostnamectl set-hostname dc1

#/etc/hosts
<IP-Address> <FQDN> <hostname>

# verify FQDN
hostname -f

# verify FQDN is resolved to the Samba IP address
ping -c3 dc1.example.lan

DNS Server bearbeiten

# stop and disable systemd-resolved service
sudo systemctl disable --now systemd-resolved

# remove the symlink file /etc/resolv.conf
sudo unlink /etc/resolv.conf

# create a new /etc/resolv.conf file
touch /etc/resolv.conf

# Samba server IP address
nameserver <samba ad dc IP Address>

# fallback resolver
nameserver <DNS Server>

# main domain for Samba
search <Domäne>

sudo chattr +i /etc/resolv.conf

Samba installieren

sudo apt install -y acl attr samba samba-dsdb-modules samba-vfs-modules smbclient winbind libpam-winbind libnss-winbind libpam-krb5 krb5-config krb5-user dnsutils chrony net-tools

##Default Kerberos verison 5 realm
<DOMAIN.DE>

#Kerberos servers for your realm
<fqdn from Domaincontroller>

#Administrative server for your bKerberos realm
<fqdn from Domaincontroller>

Samba Service bearbeiten

# stop and disable samba services - smbd, nmbd, and winbind
sudo systemctl disable --now smbd nmbd winbind

# activate samba-ad-dc service
sudo systemctl unmask samba-ad-dc

# enable samba-ad-dc service
sudo systemctl enable samba-ad-dc

Samba Konfiguiren

# backup default Samba configuration file
sudo mv /etc/samba/smb.conf /etc/samba/smb.conf.orig

Domäne erstellen

sudo samba-tool domain provision --server-role=dc --use-rfc2307 --dns-backend=SAMBA_INTERNAL --realm=<REALM> --domain=<DOMAIN> --adminpass=<PASSWORT>reate ad

KRB5 Configfile ersetzen

Dies ist sehr wichtig, da sonst die Passwort abfrage nicht geht.

sudo cp /var/lib/samba/private/krb5.conf /etc/krb5.conf

Einstellungen verifizieren

# verify domain example.lan
host -t A <Domain>

# verify domain dc1.example.lan
host -t A <FQDN>

# verify SRV record for _kerberos
host -t SRV _kerberos._udp.<Domain>

# verify SRV record for _ldap
host -t SRV _ldap._tcp.<Domain>

# checking available resources on Samba AD
smbclient -L <Domain> -N

# authenticate to Kerberos using administrator
kinit administrator@<DOMAIN>

# verify list cached Kerberos tickets
klist

Selfsigned Zertifikat einpflegen

Samba hat die Pfade geändert in Version 4 dennoch werden diese nicht automatisch erkannt daher müssen die Zertifikate mit Gesamt Pfad angegeben werden.

cd /etc/samba/tls/
openssl req -newkey rsa:2048 -keyout myKey.pem -nodes -x509 -days 365 -out myCert.pem

chmod 600 myKey.pem

nano /etc/samba/smb.conf
[general]
#Hier hinzufügen
tls enabled  = yes
tls keyfile  = tls/myKey.pem
tls certfile = tls/myCert.pem
tls cafile   = 
ldap server require strong auth = yes

Samba ist nun über LDAPS erreichbar aktiviere bei der Verbindung SSL/TLS und nimm Port 636.