labs
Samba domain controller on Ubuntu Server 22.04 LTS
Install cockpit for easy interface configuration
sudo apt install -y cockpit
Install NetworkManager on Ubuntu:
sudo apt-get install network-manager
Open the .yaml config file inside the /etc/netplan directory and replace the existing configuration with following:
network:
version: 2
renderer: NetworkManager
Generate backend specific configuration files for NetworkManager with netplan command:
sudo netplan generate
Start the NetworkManager Service:
sudo systemctl unmask NetworkManager
sudo systemctl enable NetworkManager
sudo systemctl start NetworkManager
Now the NetworkManager is enabled, interface configurations can be done via the GUI or from the command line, using the nmcli command.
Open cockpit in web browser (https://${server_ip}:9090) and set up static ip:
- set the server’s static ip as primary dns
- make sure to make all the proper infra configurations for your environment (eg static mappings in
pfsense) - set your preferred dns server as secondary
- ex:
Install Dependecies
sudo apt install -y samba winbind krb5-config smbclient dnsutils net-tools
When prompted for Default Kerberos version 5 realm:
enter in ALL CAPS the domain that will be your active directory domain, eg
HOME.ARPA
When prompted for the Kerberos servers for your realm:
enter in all lowercase the fqdn of your samba/ad instance, eg
dc1.home.arpa
When prompted for the Administrative server for your Kerberos realm:
enter in all lowercase the fqdn of your samba/ad instance, eg
dc1.home.arpa
Configure services
Backup /etc/smb.conf
sudo mv /etc/samba/smb.conf /etc/samba/smb.conf.bak
Run samba-tool domain provision --use-rfc2307 --interactive
sudo samba-tool domain provision --use-rfc2307 --interactive
When prompted for Realm:
enter in ALL CAPS the domain that will be your active directory domain, eg
HOME.ARPA
When prompted for domain:
Enter in ALL CAPS your domain name, without tld, eg
HOME
When prompted for server role
enter
dc
When prompted for DNS backend:
enter
SAMBA_INTERNAL
When prompted for DNS forwarder IP address:
enter your preferred or upstream dns server, e.g. the ip for a google or cloudflare dns server, or isp dns server, or the ip address for pfsense (if running unbound)
Next copy kerbeos config into /etc directory:
sudo cp /var/lib/samba/private/krb5.conf /etc
Disable services that will now be handled by samba active directory domain controller:
sudo systemctl disable --now smbd nmbd winbind systemd-resolved.service
Unmask the active directory service:
sudo systemctl unmask samba-ad-dc.service
Start and enable the active directory service:
sudo systemctl enable --now samba-ad-dc.service
Verify services are running:
sudo netstat -antp | egrep 'smbd|samba'
expected output:
tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 3387/smbd tcp 0 0 0.0.0.0:389 0.0.0.0:* LISTEN 3395/samba: task[ld tcp 0 0 0.0.0.0:464 0.0.0.0:* LISTEN 3405/samba: task[kd tcp 0 0 0.0.0.0:135 0.0.0.0:* LISTEN 3392/samba: task[rp tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 3387/smbd tcp 0 0 0.0.0.0:3269 0.0.0.0:* LISTEN 3395/samba: task[ld tcp 0 0 0.0.0.0:3268 0.0.0.0:* LISTEN 3395/samba: task[ld tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN 3428/samba: task[dn tcp 0 0 0.0.0.0:49154 0.0.0.0:* LISTEN 3392/samba: task[rp tcp 0 0 0.0.0.0:49153 0.0.0.0:* LISTEN 3392/samba: task[rp tcp 0 0 0.0.0.0:49152 0.0.0.0:* LISTEN 3386/samba: task[rp tcp 0 0 0.0.0.0:88 0.0.0.0:* LISTEN 3405/samba: task[kd tcp 0 0 0.0.0.0:636 0.0.0.0:* LISTEN 3395/samba: task[ld tcp6 0 0 :::445 :::* LISTEN 3387/smbd tcp6 0 0 :::389 :::* LISTEN 3395/samba: task[ld tcp6 0 0 :::464 :::* LISTEN 3405/samba: task[kd tcp6 0 0 :::135 :::* LISTEN 3392/samba: task[rp tcp6 0 0 :::139 :::* LISTEN 3387/smbd tcp6 0 0 :::3269 :::* LISTEN 3395/samba: task[ld tcp6 0 0 :::3268 :::* LISTEN 3395/samba: task[ld tcp6 0 0 :::53 :::* LISTEN 3428/samba: task[dn tcp6 0 0 :::49154 :::* LISTEN 3392/samba: task[rp tcp6 0 0 :::49153 :::* LISTEN 3392/samba: task[rp tcp6 0 0 :::49152 :::* LISTEN 3386/samba: task[rp tcp6 0 0 :::88 :::* LISTEN 3405/samba: task[kd tcp6 0 0 :::636 :::* LISTEN 3395/samba: task[ld