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A Complete Guide About VPN And VPN Protocols

VPN stands for Virtual Private Network and is a type of technology that creates a secure network connection over a public network such as the Internet or even a service provider’s private network. Various institutions such as government agencies, schools, and large corporations use VPN services to allow their users to securely connect to their private networks.

Like the World Wide Web (WAN), VPN technology can connect multiple sites, even those that are far apart. For educational institutions that connect campuses, including those in other countries, VPNs are used for this purpose. However, before using NordVPN you can also need to read real user reviews (written as 실제 사용자 리뷰 in the Korean language) so as to protect yourself from any kind of scams.

NordVPN - Review 2021 - PCMag India

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To use the VPN, the user must give a username and password for confirmation. Some VPN connections also require a PIN (Personal Identification Number), which usually consists of a unique verification code that can be found in the form of a token. The PIN code is changed every few seconds and is combined with the account username and password.

Virtual private networks are able to maintain confidentiality through the use of security procedures and tunnel protocols. Below we have listed the various VPN protocols and their descriptions:


As it uses a 128-bit traffic encryption key, PPTP is rated a less protected protocol than others. Though, this is already the case for many users, especially when connecting to a VPN for personal use only.


A more secure option is the L2TP because it works in conjunction with the IPSec protocol, which uses a better secure encryption algorithm than the one used with PPTP. The combination of the 3DES encryption algorithm and the 168-bit key makes L2TP encryption stronger.


The Secure Tunnel Socket Protocol (SSTP) is regarded as the most protected of all the other protocols and uses a 2048-bit encryption key and authentication certificate.