Virtual Private Network (VPN)

Using Virtual Private Network (VPN) to Secure Your Connection

DataNudge

August 2023

Maintaining online security and privacy has become a top priority in the age of digital connectedness. The potential for unauthorized access and data breaches is ever-present as we share sensitive information, undertake financial transactions, and interact over the Internet. In this environment, the virtual private network (VPN) emerges as a critical tool for enhancing cybersecurity. Let’s take a look at VPNs and how they can help you protect your online presence.

Understanding Virtual Private Network

A VPN is, at its core, a technology that establishes a safe, encrypted tunnel between your device and the internet. When you connect to a VPN server, all of your internet traffic is sent through an encrypted tunnel, thereby protecting your data from prying eyes. This technology was originally designed to allow distant workers to safely access business networks, but its applications have evolved to include personal use, adding an added degree of security to regular online activity.

Importance of VPN

A VPN is critical in cybersecurity because it provides a safe and encrypted tunnel for internet traffic, protecting sensitive data from prying eyes and potential attacks. By building a barrier between users and potential bad actors, VPNs provide a strong defense against cyberattacks, data breaches, and unauthorized spying. VPNs enable anonymous browsing and protect personal information by disguising users’ IP addresses and encrypting their online actions, especially when utilizing public Wi-Fi networks. VPNs’ greater privacy and security make them a vital tool for securing confidential information and preserving digital freedom in today’s linked world, whether for business or personal use.

Working Principle of VPN

A VPN works by establishing a safe and encrypted tunnel between the device and the internet. This tunnel guarantees that your data, including web traffic, is kept private and secure against potential threats and unauthorized access. This is how a VPN works:

Encryption and VPN Server:

When you connect to a VPN, your internet traffic is encrypted. This means that encryption protocols convert the data you send and receive into unreadable code. This encrypted data is then routed to a VPN server over a secure tunnel.

The VPN server is an important part of the operation. When your encrypted data arrives at the server, it is decrypted and transferred to the desired website or online service. Similarly, when you receive data from the internet, it is routed through the VPN server first.

IP Address Masking and Internet Access:

At this stage, your original IP address is substituted with the VPN server’s IP address. This has two main advantages: it protects your anonymity by masking your true IP address, and it allows you to pretend to be browsing from a different place.

The VPN server functions as a go-between for your device and the internet. It asks for information from websites or internet services on your behalf and returns it to you. The websites you visit will see the IP address of the VPN server rather than your own.

Secure Data Transmission and Decryption:

The encryption and tunneling technologies guarantee that your information remains anonymous and safe while in transit between your device and the VPN server. This is especially important while utilizing public Wi-Fi networks, which are susceptible to data capture by hackers.

The data is encrypted anew once it reaches your device. The device you’re using then decrypts the data, allowing you to access and use the online information you requested.

Types of VPN

VPNs are available in a variety of configurations to meet a variety of requirements and scenarios. VPNs are classified into several types that are given below:

Remote Access VPN:

Remote access VPNs also known as client-based VPNs, enable individual users to securely connect to a private network over the Internet. These VPNs are frequently used by remote employees or remote workers accessing company networks from locations other than the office. They provide a secure data transfer tunnel, guaranteeing that critical information is encrypted and secured.

Site-to-Site VPN:

Site-to-site VPNs also known as router-to-router VPNs, create a secure link between whole networks. This form of VPN is frequently used by companies with several locations or branch offices that need to securely share data and resources over the Internet. Site-to-site VPNs provide a virtual network between physical locations, allowing for seamless communication while protecting data privacy.

Intranet-Based VPN:

An intranet-based VPN connects many branches or locations inside a single organization. It enables employees at distant locations to safely access shared resources and communicate as if they were on the same local network. Intranet VPNs improve communication and data exchange between departments or offices.

Extranet-Based VPN:

Extranet-based VPNs expand the concept of Intranet-based VPNs to include authorized external partners such as suppliers, customers, or clients. These external entities have restricted access to certain areas of the internal network. Extranet-based VPNs provide for secure collaboration and information sharing with external stakeholders while not jeopardizing network security.

Mobile VPN:

These VPNs are intended primarily for mobile devices such as smartphones and tablets. They let customers have a secure connection even while switching between networks like Wi-Fi and cellular data. Mobile VPNs are especially crucial for users who need to access sensitive data while on the go.

SSL/TLS VPN:

For secure remote access, Secure Sockets Layer (SSL) and Transport Layer Security (TLS) VPNs are commonly employed. They employ a web browser to establish a safe connection between the device being used by the user and a secure web server. SSL/TLS VPNs are frequently used for remote access to web-based applications and resources.

IPsec VPN:

IPsec VPNs provide an elevated degree of security by encrypting and authenticating all IP packets sent between two networks. They are commonly used for remote access as well as site-to-site communications. IPsec VPNs can be configured to provide varying levels of security depending on the needs of the organization.

PPTP and L2TP VPN:

Point-to-Point Tunnelling Protocol (PPTP) and Layer 2 Tunnelling Protocol (L2TP) are older VPN protocols that are not equally safe as others. While they are reasonably easy to set up and configure, they are regarded as being less secure due to potential flaws. For their VPN purposes, organizations frequently select more secure protocols such as IPsec or SSL/TLS.

VPN Configuration

A VPN requires numerous measures to ensure a safe and dependable connection. Here’s a general guide to setting up a VPN:

  • Choose a VPN Service Provider: Select a reliable VPN service provider that matches your demands in terms of security, server locations, speed, and device compatibility. To select the best provider, conduct research and comparisons.
  • Sign Up and Subscribe: Sign up for a subscription plan with the VPN service of your choice. This normally entails opening an account, choosing a payment plan, and supplying payment information.
  • Install VPN Software: Most VPN providers provide dedicated software for a variety of devices and operating systems. Install the VPN application on your smartphone. For added convenience, several VPN services offer browser plugins.
  • Launch the App and Login: Login to the VPN app using the credentials you created during the enrollment process.
  • Select a Server Location: Choose a server location from the VPN app’s list. Your virtual location and the IP address visible to websites and online services are determined by the server location you select.
  • Connect to the VPN: Within the VPN app, click the “Connect” option to create a secure connection to the desired server. Your internet traffic will be encrypted and routed through the VPN server after you join.
  • Test Your Connection: After connecting to the VPN, browse the internet to confirm that your connection is secure and effective. You can also use internet tools to see if your IP address has changed and now reflects the VPN server’s location.
  • Configure Additional Settings: Most VPN software allows you to customize additional parameters such as the VPN protocol, an automatic connection on startup, or a kill switch that cuts off you from the internet if the VPN connection fails.
  • Disconnect and Reconnect: When you’re finished using the VPN, simply click the “Disconnect” option in the app to disconnect from the VPN server. You can also configure the app to disconnect after a particular amount of inactivity.
  • Troubleshooting and Support: If you run into any problems during setup or use, consult the VPN provider’s manual or contact customer service for assistance.

Conclusion

Safeguarding your online activity has never been more crucial in an increasingly linked world. VPNs are an efficient way to improve your cybersecurity by providing encrypted connections, anonymity, and protection from cyber threats. Whether you’re working remotely, doing financial activities, or simply browsing the internet, a VPN can protect you from the digital landscape’s dangers.