--- title: "Network Interface" slug: "server-networkinterface-classic" tags: ["Classic", "Server", "network interface"] updated: 2026-09-17T09:17:40Z published: 2026-09-17T09:17:40Z canonical: "guide.ncloud-docs.com/server-networkinterface-classic" --- > ## Documentation Index > Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # Network Interface Available in Classic Network Interface describes the screen configuration of the **Network Interface** menu and network interface information, and explains how to create and manage the network interface. Network Interface is a service for creating network interfaces that can be assigned to servers. Servers with the network interface applied are able to conduct independent network communications through subnets. Caution You need to create a private subnet beforehand to use Network Interface. For more information on how to create a private subnet, see [Private Subnet](/docs/en/server-privatesubnet-classic#PrivateSubnet%EC%83%9D%EC%84%B1). Note See the following usage tips related to network interfaces: - You can utilize network interfaces to distinguish multiple servers intuitively based on their purpose of use. Distinguish 10.1.1 as the development server and 10.1.1 as the operational server - Create multiple network interfaces in the following cases. - When you need different subnets based on the characteristics of applications to be used on servers - When you designed subnets separated by purpose but need to integrate them into one server for use ## Check network interface information You can check network interface information on the Network Interface page. ### Network Interface page On the NAVER Cloud Platform portal, click **Console > Services > Compute > Server > Network Interface** in order to view the Network Interface page. The Network Interface page is laid out as follows: ![server-networkinterface-classic_screen_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/server-networkinterface-classic_screen_en.png?sv=2026-02-06&spr=https&st=2026-11-14T05%3A04%3A59Z&se=2026-11-14T06%3A04%3A59Z&sr=c&sp=r&sig=0DCmzi50V83QOctxz%2BPAPao4y9TziPVECO5pPFg59RA%3D) | Area | Description | | --- | --- | | ① Menu name | Name of the menu currently being checked and the number of created network interfaces | | ② Basic features | Features provided when you initially enter the **Network Interface** menu - **[Create network interface]** button: click to [create a network interface](/docs/en/server-networkinterface-classic#%EB%84%A4%ED%8A%B8%EC%9B%8C%ED%81%AC%EC%9D%B8%ED%84%B0%ED%8E%98%EC%9D%B4%EC%8A%A4%EC%83%9D%EC%84%B1) - **[Learn more about the product]** button: click to move to the Server introduction page - **[Refresh]** button: click to refresh the network interface list | | ③ Post-creation functions | Features provided after creating the network interface - **[Assign to server]** button: click to select the [interface to assign to the server](/docs/en/server-networkinterface-classic#%EB%84%A4%ED%8A%B8%EC%9B%8C%ED%81%AC%EC%9D%B8%ED%84%B0%ED%8E%98%EC%9D%B4%EC%8A%A4%ED%95%A0%EB%8B%B9) - **[Remove from server]** button: click to select the [network interface to remove from the server](/docs/en/server-networkinterface-classic#%EB%84%A4%ED%8A%B8%EC%9B%8C%ED%81%AC%EC%9D%B8%ED%84%B0%ED%8E%98%EC%9D%B4%EC%8A%A4%ED%95%A0%EB%8B%B9%ED%95%B4%EC%A0%9C) - **[Return]** button: click to select the [network interface to return](/docs/en/server-networkinterface-classic#%EB%84%A4%ED%8A%B8%EC%9B%8C%ED%81%AC%EC%9D%B8%ED%84%B0%ED%8E%98%EC%9D%B4%EC%8A%A4%EB%B0%98%EB%82%A9) | | ④ Network interface list | List of created network interfaces - **Network Interface name**: name entered when creating the network interface - **Zone**: zone where the network interface is created - **Private Subnet**: IP range of the subnet where the network interface is deployed - **IP address**: IP address of the network interface - **Applied server**: if the network interface is applied to a server, name of the server | ## Create network interface To create a network interface, follow these steps: 1. In the Classic environment of the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Compute** > **Server**. 2. Click the **Network Interface** menu. 3. Click the **[Create network interface]** button. 4. Specify the settings in the Create network interface popup window. - **Network Interface name**: it must start with an English letter. Enter between 3-30 characters using lowercase English letters, numbers, and hyphens (-) - **Zone**: select the zone to deploy the network interface - **Private Subnet**: Private Subnet IP range to deploy the network interface - **Private IP address**: enter so it is included in the IP range of the private subnet that was created in advance - The network address of a Private Subnet and the initial 10 IP addresses are reserved for management. - **Select applied server**: select the server to assign the network interface 5. Click the **[OK]** button. - The created network interface is displayed in the list. ## Assign network interface You can assign unassigned network interfaces to servers. To assign a network interface to a server, follow these steps: 1. In the Classic environment of the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Compute** > **Server**. 2. Click the **Network Interface** menu. 3. In the network interface list, click to select the network interface to assign to the server, and then click the **[Assign to server]** button. 4. Select the server for application on the Assign network interface to server popup window, and then click the **OK** button. - The network interface is assigned to the selected server. ## Enable network interface See the guide for the server OS you are using to enable the added network interface on the server. ### CentOS Access the server and run the following commands: Note For bare metal servers, enter `bond1` instead of `eth1` as the value of the device. ``` $> vi /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 BOOTPROTO=static IPADDR=Enter Interface IP NETMASK=255.255.255.0 ONBOOT=yes $> ifup eth1 ``` ### Ubuntu Run the command in accordance with the version of the server you're using. #### Ubuntu 16.04 Access the server and run the following commands: Note For bare metal servers, enter `bond1` instead of `eth1`. ``` $> vi /etc/network/interfaces …… # The secondary Network Interface auto eth1 iface eth1 inet static Enter address INTERFACE IP netmask 255.255.255.0 $> ifup eth1 ``` #### Ubuntu 18.04 Access the server, create a yaml configuration file for the `eth1` interface, and then run the following commands. Note For bare metal servers, enter `bond1` instead of `eth1`. ``` ​$> vi /etc/netplan/02-netcfg.yaml network: ethernets: eth1: dhcp4: false dhcp6: false addresses: [192.168.0.12/24] version: 2 $> netplan --debug apply #The debug option will print the debugging process while running ``` ### Windows Access the server and run the following tasks: 1. Click **![i-server_window_start(1)](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/i-server_window_start(1).png?sv=2026-02-06&spr=https&st=2026-11-14T05%3A04%3A59Z&se=2026-11-14T06%3A04%3A59Z&sr=c&sp=r&sig=0DCmzi50V83QOctxz%2BPAPao4y9TziPVECO5pPFg59RA%3D) > ![i-server_setting](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/i-server_setting.png?sv=2026-02-06&spr=https&st=2026-11-14T05%3A04%3A59Z&se=2026-11-14T06%3A04%3A59Z&sr=c&sp=r&sig=0DCmzi50V83QOctxz%2BPAPao4y9TziPVECO5pPFg59RA%3D) > Network & Internet > Change adapter options** in order. 2. Right-click the icon for the added network interface, then click **Properties**. 3. Click the **[Networking]** tab, click to select **Internet Protocol Version 4 (TCP/IPv4)**, and then click the **[Properties]** button. 4. Click to select **Use the following IP address**, enter the IP address of the network interface in **IP address**, and then enter "255.255.255.0" for **Subnet mask**. 5. Click the **[OK]** button. ## Remove assignment of network interface To remove an assigned network interface from a server, follow these steps: 1. In the Classic environment of the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Compute** > **Server**. 2. Click the **Network Interface** menu. 3. From the network interface list, click to select the network interface to remove from the server, and then click the **[Remove from server]** button. 4. Check the Remove from network interface server popup window, and then click the **[OK]** button. - The network interface is removed from the assigned server. ## Return network interface To return an unused network interface, follow these steps: 1. In the Classic environment of the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Compute** > **Server**. 2. Click the **Network Interface** menu. 3. In the network interface list, click to select the network interface to return, and then click the **[Return]** button. 4. Check the Network Interface return popup window, and then click the **[OK]** button. - The network interface is returned and disappears from the list.