What is a VPN (Virtual Private Network)?
Definition of VPN is a connection between one network and another network in private (private) through a public network (internet).
Also read : Honeypot Security System Inside Archangel
The following is an explanation of the meaning of each word on the Virtual Private Network:
Virtual: things that are not real or pseudo, in cyberspace / internet
Private: things that are personal, cannot be accessed by anyone. To maintain confidentiality from the public network, all data will be encrypted
Network: a connected network of connections
So, from the explanation above it can be concluded that the definition of VPN is a relation or connection that occurs virtually on a particular network without the existence of a real connection that is encrypted.
VPN Functions in General
Understanding VPN and its functions
The use of VPN is a safe way to access a Local Area Network (LAN) that is in a certain range, through an internet connection or other network to transmit data privately. By using a VPN, we can avoid intruders when transmitting data which can sometimes enter network traffic.
Referring to the definition of VPN above, while some VPN functions are as follows:
1. Data Confidentiality (Confidentially)
Using VPN can maintain the confidentiality of user data and information so that it is not used by others at random. Currently using a network that is public in nature can be considered quite dangerous, especially for large businesses, for example, in consulting or insurance service companies that are vulnerable with important information.
So by using a VPN it can secure the entry and exit of data through the encryption method.
2. Data Integrity
VPN is also useful to save data from irresponsible individuals. VPN programs will ensure the data transmission process that completed and received by the recipient in accordance with the user’s request without the slightest change or manipulation of the data sent.
3. Source Authentication (Origin Authentication)
The VPN program is able to authenticate the sender’s source of data to be received. VPN ensures and checks the data that will enter from the source. If the authentication process is successful, then the information or data can be approved.
In this case the VPN is useful for analyzing data sources that are not credible so that it can prevent virus or malware file submissions.
After understanding the meaning of VPN and its functions, of course we also need to know what the benefits are. With the VPN, all data transmissions that occur between computers or personal gadgets will be encrypted so that it is safe from other unwanted parties.
In general the benefits of using VPN are as follows:
Privacy; privacy that is more guaranteed by the feature hides the activities of the ISP when surfing the internet. VPN users can hide their IP address so that when browsing the internet other people will not know the user’s geographical location
Remote Access; with the VPN, we can access computer networks in the office or anywhere through the internet.
Security; VPN helps maintain internet network security from hacker attacks, especially when using public WiFi
Save Cost; VPN helps save network setup costs. The use of VPN on a wide local network can be done at a low cost because it uses an existing internet network without having to build its own network
The way VPN works itself is by creating a network within the network (often called tunneling). Tunneling aims to create a connection path privately by utilizing other network infrastructure.
How does VPN work?
Understanding VPN and how does it work.
Generally, when we access a website on the internet, we will be connected to an ISP (Internet Service Provider). All traffic data requests for websites that we access will pass through the ISP server and can be seen by the ISP.
Unlike the case with computers that use VPN when accessing the internet. VPN will encrypt data so that only VPN server users can find out the traffic of user data and sites that are opened by users.
See how this VPN works, then:
The ISP will not know the activity of VPN users on the internet
The visible IP address is the VPN server IP
The use of public WiFi hotspots is safer because the data is encrypted
VPN providers can see VPN user activity on the internet
Advantages and Disadvantages of VPN
Using a VPN server on a company’s computer network for data transmission that is confidential or private helps to overcome undesirable things, such as in cases of data theft that are rampant.
By using VPN, nothing can infiltrate your personal network so that the transmission security level is very high. Referring to the definition of VPN, as for some advantages and disadvantages of VPN are as follows:
1. Advantages of VPN
For companies that need special, secure networks, VPN is a cheaper solution
With the existence of a VPN, company mobility will be better where workers can connect to office networks through personal devices at home
VPN security features can be customized
2. Lack of VPN
When providing access to employees globally, the security factor becomes a risk because the company’s sensitive information can be accessed.
Extra attention is needed in establishing a VPN security system
The above was a brief explanation of the definition of VPN, functions, benefits, and how the Virtual Private Network works. Hopefully, this article is useful and adds to your insight.