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What is a VPN protocol? And Types of VPN protocols

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What is a VPN protocol? And Types of VPN protocols

VPN stands for the virtual private network. This phrase means virtual private network. A VPN is a virtual private network that lets public network users receive and send data over a private network. In this case, the computer systems and user devices are somehow connected to the private network through the public network.

A VPN makes a private network between two computers on the Internet through a tunnel. The VPN protocol, even known as the tunneling contract, is a set of education that your device uses to designate a secure connection (network between your device and another computer).

The VPN protocol is usually made up of two channels: the data and control channels. The control channel is accountable for key exchange, authentication, and parameters business. The data channel is responsible for transmitting your internet traffic data. Jointly, these two channels create and maintain a secure VPN tunnel. Nevertheless, your internet traffic data must be encapsulated to cross this tunnel.

Then we will talk about some Types of VPN protocols.

Types of VPN protocols

PPTP (Point to Point Tunneling Protocol)

It is one of the most common and, of course, the weakest protocols used in VPN communications. PPTP stands for Point-to-Point Tunneling Protocol. Devised by Microsoft, it is used for tunneling and is encrypted with the MPPE protocol.
This protocol has different security exposures that put communications and data at risk of leakage by security institutions. Still, because it is rooted in most operating systems and on the other hand it is easy and fast to use, it has become one of the most common protocols. . PPTP may be the best choice for you if your communication security is not necessary.

Point-to-Point Tunneling Protocol, or PPTP for short, has been in use since the 1990s and was first widely enforced in Microsoft Windows products (since Windows 95 update 1.3). PPTP operates several other protocols to deliver a complete solution, including Point-to-Point Protocol, PPP for short, and an improved version of the GRE.

For PPTP to work, a control channel must first be set up to construct a data tunnel. This data tunnel is encapsulated with the GRE, which carries a PPP Frame; PPP helps transport several protocols, including IP. PPP also supports authentication, encryption, and reduction.

PPTP is one of the most accessible protocols in configuration, but it has known weaknesses in terms of confidentiality. This is because PPTP uses Microsoft Point-to-Point Encryption, or MPPE for short, to support RC4 encryption that has known vulnerabilities.

L2TP/IPSec (Layer 2 Tunneling Protocol)

It stands for Internet Protocol Security and is a protocol for securing the public Internet network. In addition to encryption, this protocol can likewise tunnel. This protocol is in Transport Mode, which encrypts only the information retained in the data portion of the IP packet, and Tunnel Mode, which encrypts the whole IP packet (data and header). This protocol works in VPN connections alongside the L2TP protocol.
L2TP stands for Layer 2 Tunneling, is used for tuning, is PPP-based, and has no encryption. Regardless, in combination with IPSec, it can be very suitable.
The L2TP / IPSec protocol combination is kept embedded in newer operating systems. This means that it is straightforward to set up and has high security. But because it does not have many designs.

OpenVPN

OpenVPN is a secure protocol that uses OpenSSL and SSL / TLS for encryption. This protocol has a lot of configurability, and if the AES algorithm is employed, it will be one of the most powerful VPN protocols.
Because this protocol is not kept on existing operating systems, you must have an add-on installed on your system to use it. This protocol is suggested but is just less stable than SSTP.

IKEv2(Internet Key Exchange Version 2)

It is an IPsec-based protocol that stands for Internet Key Exchange Version 2. It is a joint product of Cisco and Microsoft and is compatible with multiple platforms. When the connection is lost, the relationship is reconnected quickly, a great advantage for mobile users. IKEv2 is one of the few protocols that support Blackberry. IKEV2 is less expensive than IPsec but very secure, durable, and efficient.

SSTP ( Secure Socket Tunneling Protocol)SSTP

It stands for Secure Socket Tunneling Protocol and is a protocol for tunneling. Nevertheless, in addition to the SSL protocol for encryption, it is very suitable for VPN connections. SSTP supports Windows Vista Service Pack 1 and later as implanted by these operating systems, which is why it is often better than OpenVPN. You will have a strong connection by configuring this protocol to use AES encryption. The benefit of SSTP is more suggested than other protocols.

Source:https://tisstech.ir/vpn/

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