It is also called a media gateway or a remote-access server (RAS) and is responsible for setting up and maintaining each tunnel in a remote-access VPN. Users connect to this to use a VPN.

It is also called a media gateway or a remote-access server (RAS) and is responsible for setting up and maintaining each tunnel in a remote-access VPN. Users connect to this to use a VPN.

• A. Tunnel terminating device (VPN server)
• B. VPN client
• C. Anonymous Proxy
• D. Network Access Server (NAS)

Answer: (D)

The main idea is the gateway that remote users connect to in order to establish and maintain their VPN sessions. This device is the Network Access Server, which acts as the entry point for remote-access VPNs. It authenticates users, negotiates and sets up the VPN tunnel, and keeps that tunnel alive as traffic flows between the client and the internal network. In some contexts this gateway is also described as a media gateway or a remote-access server (RAS), reflecting its role as the remote entry point and tunnel terminator. When you connect to a VPN, your client talks to this NAS to establish the session; once the tunnel is up, the NAS handles encapsulation/decapsulation and routing of the traffic through the VPN. A VPN client, by contrast, lives on the user’s device and initiates the connection rather than hosting the tunnel termination. An anonymous proxy is a separate service used to anonymize web traffic and is not responsible for VPN tunnel management. A tunnel-terminating device or VPN server can be a related concept, but NAS is the term that emphasizes the remote-access gateway that users connect to for VPN access.

The main idea is the gateway that remote users connect to in order to establish and maintain their VPN sessions. This device is the Network Access Server, which acts as the entry point for remote-access VPNs. It authenticates users, negotiates and sets up the VPN tunnel, and keeps that tunnel alive as traffic flows between the client and the internal network. In some contexts this gateway is also described as a media gateway or a remote-access server (RAS), reflecting its role as the remote entry point and tunnel terminator.

When you connect to a VPN, your client talks to this NAS to establish the session; once the tunnel is up, the NAS handles encapsulation/decapsulation and routing of the traffic through the VPN. A VPN client, by contrast, lives on the user’s device and initiates the connection rather than hosting the tunnel termination. An anonymous proxy is a separate service used to anonymize web traffic and is not responsible for VPN tunnel management. A tunnel-terminating device or VPN server can be a related concept, but NAS is the term that emphasizes the remote-access gateway that users connect to for VPN access.