What is a VPN and how does it work?

what is a vpn and how does it work.

What is a VPN and how does it work?


What is a VPN


Surely many of us have used a VPN because we want privacy that remains safe. VPNs do offer a layer of privacy that cannot be achieved if you access the web directly through your ISP's servers. However, although many people use it, not many people know what a VPN is and how it works.


Also Read: Safe VPN Applications For Android

TABLE OF CONTENTS

1. What is a VPN?

2. How VPN Works

3. Types of VPN Protocol Types

4. VPN Function

5. 1. Remote Access

6. 2. Online Privacy and Security

7. 3. Circumnavigate Blocked Sites

8. 4. Geographically Blocked Content

9. Things VPNs Can't Do

10. 1. Block Cookies

11. 2. Makes You Completely Anonymous

12. 3. Protects Against Malware Threats

13. Conclusion


What is a VPN?


VPN stands for Virtual Private Network. A VPN is often thought of as a tunnel or secure tunnel between two parts of the web. That way no one else on the web can see what's going on in your private VPN tunnel. On a more technical level, a VPN is a connection method that brings many additional security benefits, especially for anyone using a public connection. VPNs can also be installed on certain browsers, desktops or laptops, smartphones, and routers.


How VPN Works


Saat kalian terhubung ke web tanpa VPN, lalu lintas kalian mengalir bebas dalam bentuk yang tidak dienkripsi dari mesin kalian ke server ISP. Dari sana, koneksi tersebut pergi ke server di seluruh dunia. Hal itu rentan terhadap serangan man-in-the-middle attacks, snooping, dan ancaman keamanan lainnya.


Jika kalian menggunakan VPN, lalu lintas akan dienkripsi oleh aplikasi VPN di komputer atau ponsel cerdas kalian bahkan sebelum meninggalkan perangkat kalian. Dari sana, koneksi pergi ke server ISP kalian, dan kemudian ke server VPN kalian. Ketika mencapai server VPN, lalu lintas didekripsi dan diteruskan ke web yang lebih luas. Disini juga kalian menggunakan alamat IP VPN tersebut. Dalam banyak kasus, pengguna dapat memilih lokasi fisik dari server VPN yang mereka gunakan.


Jenis Jenis Protokol VPN


Ada beberapa jenis protokol VPN. Tidak semua penyedia mendukung semua protokol. Beberapa protokol VPN paling populer meliputi:

  * IPsec:  Internet Protocol Security (IPsec) telah dibuat untuk digunakan dengan IPv6. Ini mengenkripsi lalu lintas dengan mengenkapsulasi paket IP di dalam paket IPsec.

  * SSL / TLS: Transport Layer Security (SSL / TLS) dapat menyalurkan semua lalu lintas di jaringan melalui koneksi VPN. Ini digunakan dalam proyek OpenVPN.

  * SSH: Secure Shell (SSH) VPN menggunakan tunneling untuk menambah keamanan ke tautan intra-jaringan.

  * SSTP: Microsoft Secure Socket Tunneling Protocol (SSTP) menggunakan terowongan Point-to-Point Protocol (PPP) untuk mengirim lalu lintas melalui saluran SSL 3.0.


Fungsi VPN


1. Remote Access


VPN pertama kali muncul karena kebutuhan orang untuk mengakses jaringan dari jarak jauh dan aman. Beberapa pengguna pertama adalah bisnis dengan banyak cabang atau karyawan di luar lokasi. Manfaat asli itu masih ada sampai sekarang. Jutaan orang menggunakan VPN yang disediakan perusahaan untuk mengakses jaringan dan server internal.


2. Privasi dan Keamanan Online


Karena cara kerja VPN, pengguna dengan cepat menyadari bahwa teknologi ini juga memiliki manfaat privasi dan keamanan yang sangat besar. Tidak semua VPN menawarkan fitur yang sama. Namun, jika kalian menggunakan layanan VPN yang berbayar, kalian akan mendapatkan fitur-fitur sebagai berikut:

  * Enkripsi: Hampir semua layanan VPN komersial mengenkripsi data lalu lintas web kalian. Hal ini berarti informasi kalian tidak dapat dibaca oleh peretas atau aplikasi jahat apa pun yang mengintai data jaringan kalian.

  * Alamat IP Tersembunyi: Untuk orang luar, komputer kalian tampaknya memiliki alamat IP server VPN. Banyak perusahaan mengumpulkan data dalam jumlah besar berdasarkan alamat IP, jadi menghapus alamat kalian sendiri secara drastis akan meningkatkan anonimitas kalian.

  * Tanpa Logging: Beberapa VPN tidak akan mencatat data penjelajahan kalian. Ini berarti bahwa jika pemerintah datang mencari informasi, tidak ada yang bisa diserahkan. Berhati-hatilah, bagaimanapun, tidak semua VPN membuang log, dan beberapa memiliki kebijakan privasi yang disamarkan dengan sengaja.


3. Circumnavigate Situs Yang Diblokir



Websites are often blocked on certain networks. For example, Indonesia should not allow people to enter Reddit. A VPN will allow you to access blocked sites. The tunnels we talked about earlier give your machine a way to bypass network restrictions and freely access the internet from your VPN server location.


4. Geographically Blocked Content


The last VPN function is that it can open geo-blocked content, usually a VPN will have hundreds of servers in dozens of countries around the world to give users flexibility. This is useful when you want to watch video content from their home country. But some leading streaming services theoretically limit access from VPNs by blocking known VPN IP addresses.


Things a VPN Can't Do


1. Block Cookies


There are other ways that companies can track you on the web. One of the most common ways is to use cookies. A VPN cannot block cookies. This means that large organizations or companies like Facebook, Amazon, and Google will still be able to monitor you.


Also Read: What Are Cookies On Web Browsers


2. Makes You Completely Anonymous


A VPN is not a guarantee of online anonymity. First, they can go offline unexpectedly or experience DNS leaks, both of which can expose your data to snoopers, ISPs, and governments without warning. Second, even though your ISP no longer has a copy of your browsing data, your VPN provider now has a copy. Thus, you put a lot of trust in the provider not to use it for unwanted purposes. For a better level of anonymity online, you should consider using the Tor network.


3. Protects Against Malware Threats


VPN connection does not have anti-virus properties. You will still need to run one of the anti-virus suites to protect yourself from the threats that you are sure to encounter while surfing the web. And you need to know, some malware has the ability to turn off VPN without your permission.


Also Read: Beware! This is the Latest Computer Virus in 2019


Conclusion


So what is a VPN? Simply put, a VPN connects your device to another computer called a server somewhere on the internet, and allows you to browse the internet using that computer's internet connection.

Hopefully, this article about What is a VPN and how does it work?, gives you a little insight. Also, read an article about What is a Website Security Certificate? that you may need to know. Thank you.

Previous Post Next Post