Which tool does Ubuntu use for network configuration?

Ubuntu installations use Netplan, which is managed through YAML configuration files in the /etc/netplan/ directory.

Dedicated Server: IP Configuration (Ubuntu/Debian)

Learn how to configure a static IP address on a Linux server running Ubuntu or Debian → Learn more now

10 November 20262 min read0 Views0 helpful

Introduction

Configuring IP addresses on your Linux Dedicated Server lets you control how your server communicates over the network. This includes assigning IP addresses, defining the default gateway, and setting up the DNS servers required for network connectivity.

Warning

Server unreachable due to a missing internet connection? If your server is no longer reachable because of an incorrect network configuration or a missing internet connection, remote access via SSH may no longer work. Use the HTML5 console in Remote Management to connect to your server and correct the network configuration.

Dedicated Server: IP Configuration (Ubuntu/Debian)

Preparation

Before configuring a static IP address, make sure you have the following information ready:

The IP address you want to assign
Subnet mask
Default gateway
DNS servers

You can find this information in the Network tab for your Dedicated Server in the ZapX panel.

Configuration

Ubuntu (Netplan)

Ubuntu installations use Netplan for network configuration. Connect to your Dedicated Server via SSH and find the Netplan configuration file in the /etc/netplan/ directory. Open the configuration file:

bash

nano /etc/netplan/50-cloud-init.yaml

Adjust the configuration to define a static IP address:

Code

network:
  version: 2
  ethernets:
    eth0:
      match:
        macaddress: "bc:24:11:5f:5c:34"
      addresses:
      - "109.230.238.45/24"
      nameservers:
        addresses:
        - 8.8.8.8
        - 1.1.1.1
      set-name: "eth0"
      routes:
      - to: "default"
        via: "109.230.238.1"

Adjust the following values to match your network configuration:

109.230.238.45 → Your static IP address
109.230.238.1 → Your gateway
DNS addresses → Your preferred DNS servers

Save the file and apply the configuration:

Code

sudo netplan apply

Debian

Debian often uses the network interfaces configuration file instead of Netplan. Connect to your Dedicated Server via SSH and open the network interfaces file:

Code

nano /etc/network/interfaces

Add or adjust the configuration for your network interface. Example configuration:

bash

auto lo
iface lo inet loopback

# Die primäre Netzwerkschnittstelle
allow-hotplug ens18
iface ens18 inet static
        address 134.255.219.160/24
        gateway 134.255.219.1
        # dns-* Optionen werden vom resolvconf-Paket umgesetzt, falls installiert
        dns-nameservers 1.1.1.1

Adjust the values to match your network configuration:

address → Your static IP address
netmask → Your subnet mask
gateway → Your default gateway
dns-nameservers → Your preferred DNS servers

After saving the configuration file, restart the network service:

Code

systemctl restart networking

Verification

After applying the configuration, check that the new IP address has been applied correctly. Run the following command in the terminal:

Code

ip a

This command displays all network interfaces on the system along with their current configuration details. Find the interface you configured in the output. Depending on your system, it is usually named eth0, ens18, or something similar.

In the interface section, you will find the inet entry, which shows the assigned IPv4 address. The output should include the static IP address you configured. For example:

Code

inet 109.230.238.45/24

If the correct address is displayed, the static IP configuration was applied successfully. If the new IP address does not appear, check the configuration file again and make sure the changes were saved correctly before applying the configuration again.

Conclusion

Congratulations! You have successfully configured your IP address on your Linux server. Our support team is available every day if you have any further questions or issues—don't hesitate to contact us! 🙂

FAQ

Frequently asked questions

Connect to your server via SSH and open the Netplan configuration file in /etc/netplan/ (for example, with nano /etc/netplan/50-cloud-init.yaml). Enter your IP address, nameservers, and default route according to your network details.

You need the IP address to assign, the subnet mask, the default gateway, and the DNS servers. You can find these in the Network tab for your Dedicated Server in the ZapX panel.

Use the HTML5 console in Remote Management to connect to your server independently of its network connection and correct the configuration.

Feedback

Was this article helpful?

Your feedback helps us prioritize and improve content.

0 of 0 Users found this article helpful.

Personal support

Need more help than the guide provides?

Our ZAP support team knows your product — briefly describe your issue and we'll help you personally.

Which 🍪 cookies would you like to allow?

Dedicated Server: IP Configuration (Ubuntu/Debian)

Introduction

Preparation

Configuration

Ubuntu (Netplan)

Debian

Verification

Conclusion

Frequently asked questions