Configure the network interface on the server

Last update: April 10 2024

Configure the network interface on the server

To connect the server to private and public-network, configure the network interfaces on the server.

The network interface for the public network is configured automatically only when automatic OS installation. The interface for a private network must always be configured manually.

You can view the settings for configuration in Control Panel on the server page → Network tab.

Configure the network interface of the public network⁠

Ubuntu

1. Connect to the server via SSH or via KVM-console.

2. Open the netplan utility configuration file with the vi text editor:

   vi /etc/netplan/01-netcfg.yaml

3. Add or change the values of the public network interface settings:

       <eth_name>:
               addresses: [<ip_address>/<mask>]
               gateway4: <gateway>
               nameservers:
                   addresses: [<dns_servers>]

   Specify:

   • <eth_name> is the name of the network interface of the public network;
   • <ip_address>/<mask> — public IP address of the server with subnet mask (for example: 188.93.23.36/29);
   • <gateway> is a gateway;
   • <dns_servers> — DNS servers. DNS Selectel: 188.93.16.19, 188.93.17.19.

4. Press the ESC key.

5. Exit the vi text editor with the changes saved:

   :wq

6. Apply the configuration:

   netplan apply

7. Optional: reboot the server.

Debian

1. Connect to the server via SSH or via KVM-console.

2. Open the network interfaces configuration file with the vi text editor:

   vi /etc/network/interfaces

3. Add or change the values of the public network interface settings:

   auto <eth_name>
   iface <eth_name> inet static
   address <ip_address>
   netmask <mask>
   gateway <gateway>
   dns-nameserver <dns_servers>

   Specify:

   • <eth_name> is the name of the network interface of the public network;
   • <ip_address> — the public IP address of the server (for example: 188.93.23.36);
   • <gateway> is a gateway;
   • <mask> is the subnet mask;
   • <dns_servers> — DNS servers. DNS Selectel: 188.93.16.19, 188.93.17.19.

4. Press the ESC key.

5. Exit the vi text editor with your changes saved:

   :wq

6. Restart the network:

   service networking restart

7. Optional: reboot the server.

CentOS

1. Connect to the server via SSH or via KVM-console.

2. Output information about the network interfaces:

   ip address

3. Create or open a public network interface configuration file with the vi text editor:

   vi /etc/sysconfig/network-scripts/ifcfg-<eth_name>

   Specify <eth_name> as the name of the network interface.

4. Add or change the values of the network interface settings:

   NAME=""<eth_name>"
   ONBOOT=yes
   NETBOOT=yes
   BOOTPROTO=static
   HWADDR=""<mac_address>"
   IPADDR=""<ip_address>"
   NETMASK=""<mask>"
   GATEWAY=""<gateway>"
   TYPE=Ethernet

   Specify:

   • <eth_name> is the name of the network interface of the public network;
   • <mac_address> — MAC address of the network device;
   • <ip_address> — IP address (for example: 188.93.23.36);
   • <mask> is the subnet mask;
   • <gateway> is a gateway.

5. Press the ESC key.

6. Exit the vi text editor with your changes saved:

   :wq

7. Restart the network:

   systemctl restart network

8. Optional: reboot the server.

An example of changing network settings in CentOS is in the blog article Configuring Networking in CentOS 7.

Windows

1. Connect to the server via RDP or via KVM-console.

2. Open the Network and Sharing Center.

3. Open the network interface of the public network.

4. Press Properties.

5. From the list, select IPv4.

6. Press Properties.

7. Specify the network interface parameters:

   • IP-address — public IP address of the server (for example: 188.93.23.36);
   • Subnet mask — subnet mask.

8. Press OK.

Configure the network interface of the private network⁠

Ubuntu

1. Connect to the server via SSH or via KVM-console.

2. Open the netplan utility configuration file with the vi text editor:

   vi /etc/netplan/01-netcfg.yaml

3. Add or change values for the network interface settings of the private network:

       <eth_name>:
               addresses: [<ip_address>]

   Specify:

   • <eth_name> is the name of the network interface of the private network;
   • <ip_address> — private IP address of the server (for example: 192.168.0.2/24).

4. Press the ESC key.

5. Exit the vi text editor with your changes saved:

   :wq

6. Apply the configuration:

   netplan apply

7. Optional: reboot the server.

Debian

1. Connect to the server via SSH or via KVM-console.

2. Open the network interfaces configuration file with the vi text editor:

   vi /etc/network/interfaces

3. Add or change values for the network interface settings of the private network:

   auto <eth_name>
   iface <eth_name> inet static
   address <ip_address>

   Specify:

   • <eth_name> is the name of the network interface of the private network;
   • <ip_address> — private IP address of the server (for example: 192.168.0.2/24);

4. Press the ESC key.

5. Exit the vi text editor with your changes saved:

   :wq

6. Restart the network:

   service networking restart

7. Optional: reboot the server.

CentOS

1. Connect to the server via SSH or via KVM-console.

2. Output information about the network interfaces:

   ip address

3. Create or open the private network interface configuration file with the vi text editor:

   vi /etc/sysconfig/network-scripts/ifcfg-<eth_name>

   Specify <eth_name> as the name of the network interface of the private network.

4. Add or change the values of the network interface settings:

   NAME=""<eth_name>"
   ONBOOT=yes
   BOOTPROTO=none
   IPADDR=""<ip_address>"

   Specify:

   • <eth_name> is the name of the network interface of the private network;
   • <ip_address> — private IP address of the server (for example: 192.168.0.2/24);

5. Press the ESC key.

6. Exit the vi text editor with your changes saved:

   :wq

7. Restart the network:

   systemctl restart network

8. Optional: reboot the server.

An example of changing network settings in CentOS is in the blog article Configuring Networking in CentOS 7.

Windows

1. Connect to the server via RDP or via KVM-console.

2. Open the Network and Sharing Center.

3. Open the network interface of the private network.

4. Press Properties.

5. From the list, select IPv4.

6. Press Properties.

7. Specify the network interface parameters:

   • IP-address — private IP address of the server (for example: for example: 192.168.0.2);
   • Subnet mask — subnet mask.

8. Press OK.