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VPN services that are delivered from cloud infrastructure and typically offer scalable, on-demand VPN connectivity. Implementation scenario: Ideal for businesses that require flexible and scalable remote access without on-premises hardware.

A tunneling protocol used to support VPNs. L2TP does not provide encryption or confidentiality by itself and is often combined with IPSec. Implementation scenario: Commonly used to provide VPN connectivity for mobile devices.

A data-carrying technique that directs data from one node to the next based on short path labels rather than long network addresses. Implementation scenario: Often used by service providers to create VPNs over optimized network paths.

A dynamic tunneling form of a VPN that supports multiple connections from sites in a mesh topology. Implementation scenario: Particularly useful in situations where intermittent connections between network sites are expected.

A VPN feature that allows the user to decide which traffic is sent through the VPN tunnel and which is sent through the native network. Implementation scenario: Used to reduce VPN load by excluding local web traffic or specific applications.

An obsolete method for implementing VPNs, with many known security issues, but is easy to set up. Implementation scenario: An older VPN solution, typically replaced by more secure protocols but can still be found in legacy systems.

A suite of protocols for ensuring private, secure communications over IP networks through the use of cryptographic security services. Implementation scenario: Used to establish a secure connection between remote office networks.

An open-source VPN protocol that uses SSL/TLS for key exchange. It is capable of traversing network address translators (NATs) and firewalls. Implementation scenario: Suitable for creating secure point-to-point or site-to-site connections.

A form of VPN tunnel that provides a mechanism to transport PPP traffic through an SSL/TLS channel. Implementation scenario: Utilized to enable remote users to access corporate networks securely, typically on Windows platforms.

Provides secure remote access to web applications and services through a web browser, without the need for client software. Implementation scenario: Used to grant remote users secure access to internal network services.

A newer, simpler, and faster VPN protocol that utilizes state-of-the-art cryptography. Implementation scenario: Ideal for both small-scale personal use and large-scale corporate VPNs for its performance and simplicity.

A protocol used to setup a security association (SA) within IPSec and to manage VPN negotiation. It excels in re-establishing broken connections. Implementation scenario: Commonly used in mobile VPN applications due to its mobility and multi-homing capabilities.

A simple, universal, packet encapsulation protocol that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links. Implementation scenario: Often used to encapsulate packets for tunneling them over an IP network.

A network setup where users are presented with a web page requiring action before network access is granted, often implemented alongside a VPN for guest access. Implementation scenario: Frequently used in hotels, cafes, and public spaces to regulate Wi-Fi access.