---
title: "IPsec VPN glossary"
slug: "ipsecvpn-glossary"
tags: ["IPsec VPN"]
updated: 2026-09-17T09:18:17Z
published: 2026-09-17T09:18:17Z
canonical: "guide.ncloud-docs.com/ipsecvpn-glossary"
stale: true
---

> ## 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.

# IPsec VPN glossary

Available in Classic and VPC.

There are a few terms you need to know to use IPsec VPN. The terminologies and their descriptions are as follows.

### DPD (Dead Peer Detection)

A function that checks whether the opposite IPsec VPN gateway (peer IP address) is active when there is no traffic in the VPN session.

### IKE (Internet Key Exchange)

A protocol used to perform authentication and negotiate session keys for encrypting traffic.

### Peer IP

The public IP address of customer's external network’s IPsec VPN Gateway

### Virtual Private Gateway (VGW)

A feature in VPC that acts as a connection point between VPC and connected external devices. Must be created for external connections.

### Virtual Private Gateway Group

A group that handles the routing of secure communication between the VPC network and the on-premise section and connects them to the Virtual Private Gateway by grouping them.

### VPN Gateway

A connection point needed to create a virtual tunnel to connect my PC or network to a private network that is inaccessible from outside the VPN gateway

### VPN Tunnel

A virtual medium through which two VPN gateways are connected to carry encrypted traffic

### On-premise

On-premise company's server is not operated in a remote environment such as a cloud, but is directly installed and operated in a server owned by the company's own computer room.

### Internet security protocol virtual private network (IPsec VPN)

A NAVER Cloud Platform service that provides a network that connects the external customer network and the network in NAVER Cloud Platform through an encrypted tunneling communication

### Private Subnet

Service that provides an independent virtual network environment that allows internal communications between servers

          Note

          

To see a full list of terms and definitions, go to [Glossary](https://www.ncloud.com/guideCenter/glossary) from the NAVER Cloud Platform portal.