What is a VPN? Why Should I Use a VPN? | Microsoft Azure (2025)

What is a VPN? Why Should I Use a VPN? | Microsoft Azure (1)

What does a good VPN do?

Now that you know the advantages of using a VPN, as well as its various types, protocols, and use cases, let's explore what to look for in a VPN provider. There are plenty of options on the market, but you'll want to select a reputable company with clear expertise, a proven track record, and trustworthy values. Here are some of the features you should look for in a good VPN provider:

Strong protocols

The most important feature of any VPN provider is security, so it's essential to choose a service that uses an industry-standard protocol with 256-bit encryption—the same kind of encryption used by banks and military. In today's landscape, this means being aware of the limitations of older protocols like L2TP/IPSec, while avoiding obsolete protocols like PPTP altogether. Instead, opt for services that use OpenVPN, SSTP, IKEv2/IPSec, or WireGuard. The top providers support multiple protocols and should allow you to toggle between them, depending on the use case.

IP address protection

Greater anonymity is a pivotal reason to use a VPN. When looking for a provider, you'll want to choose one that provides you with options for rerouting your IP address. A shared IP address groups multiple users together under one IP, protecting you from within the crowd, while quick and easy server switching allows you to choose your location from wherever your provider's servers are located.

A range of servers across many locations

When using a VPN, you may notice a slowdown in performance if your provider only runs a select number of servers in a select number of locations. By using a service comprised of many servers located near and far, including ones closer to you, your data travels a shorter distance, improving on speed. The more servers there are around the world, the more spread out the users, the faster the performance. And if you're looking to switch to an IP address from a particular region, you'll want to see that your provider has a server there that supports your chosen protocol.

Zero-log policy

You may be hidden from third parties, but in theory, a VPN provider has the power to potentially see everything you do under its protection. Because of this, it's important to go with a company that practices transparency around their logging policy. A zero-log, or no-log VPN provider keeps a record of your email address, payment information, and VPN server, but it shouldn't log or store any data that gets sent while you're securely connected. This includes usage logs, connection logs, session data, or even your IP address.

Kill switch

If your secure VPN connection gets interrupted, your computer reverts to your real IP address, in turn compromising your identity. A kill switch prevents this from happening by cutting off your Internet connection as soon as your VPN connection disrupts.

Mobile compatibility

Mobile activity gets risky when it's happening on an unsecured Wi-Fi network. If you're looking for a safer mobile experience, then it may be useful to look for a provider that offers support for mobile VPN, particularly the ability to switch to the IKEv2/IPSec protocol when roaming. This ensures that your connection is secure, even when you move from public Wi-Fi to cellular data.

Options for authentication

When a computer attempts to connect to a VPN server, the VPN must first authenticate the user before the connection is successful. This typically means entering your credentials via a login page or desktop client, though it's best to consider additional options for authentication. Multi-factor authentication, for instance, requires that you authorize your login with your mobile device through an app. You may also want to use a physical security key, which you plug into your USB port, for even more security.

Customer support

Like other software companies, a VPN provider must have a reliable support team for you to contact for any issues that may arise. This support team should be knowledgeable, helpful, and easy to get in touch with.

Premium pricing

In general, it's best to avoid free VPNs altogether. By choosing a paid provider, you are choosing a real and credible company, backed by quality technology and infrastructure. A paid provider is also less likely to log your activities and sell that information to advertisers. A premium VPN may require a monthly fee, but the value of safety, security, and peace of mind is well worth the cost.

What is a VPN? Why Should I Use a VPN? | Microsoft Azure (2025)

FAQs

What is a VPN in Azure? ›

A VPN, which stands for virtual private network, establishes a digital connection between your computer and a remote server owned by a VPN provider, creating a point-to-point tunnel that encrypts your personal data, masks your IP address, and lets you sidestep website blocks and firewalls on the internet.

What is a VPN and why would I use it? ›

A VPN, which stands for virtual private network, protects its users by encrypting their data and masking their IP addresses. This hides their browsing activity, identity, and location, allowing for greater privacy and autonomy. Anyone seeking a safer, freer, and more secure online experience could benefit from a VPN.

Why should you use a VPN and what is a downside of using one? ›

If you want to access content blocked or restricted in your country, a VPN lets you connect to servers in other countries where that content is available. While VPNs have a lot of perks, there are potential downsides, too. A VPN can reduce internet speed and increase latency, which slows down online activities.

What is a VPN for dummies? ›

VPN stands for "Virtual Private Network" and describes the opportunity to establish a protected network connection when using public networks. VPNs encrypt your internet traffic and disguise your online identity. This makes it more difficult for third parties to track your activities online and steal data.

What type of VPN is Azure? ›

VPN types. Azure supports two different VPN types for VPN gateways: policy-based and route-based. Route-based VPN gateways are built on a different platform than policy-based VPN gateways. This results in different gateway specifications.

What is VPN used for in cloud? ›

A cloud virtual private network (cloud VPN) is a form of technology designed to help users access their organization's applications, data, and files through a website or an application. Unlike traditional or static VPNs, a cloud VPN provides a secure connection that can be rapidly deployed globally.

When should you use a VPN? ›

VPNs offer the best online security, so keeping it on will protect you against data leaks and cyberattacks, especially while you're using public Wi-Fi. It can also safeguard against intrusive snoopers such as ISPs or advertisers. Always use a VPN when you go online.

How does a VPN protect you? ›

A VPN creates a secure tunnel between a user's computer and the VPN server, which hides their online activity and location. VPN security enables users to protect their online privacy and prevent their internet service provider (ISP) from tracking their browsing activity.

Why is it safe to use VPN? ›

Protection against third-party tracking.

When you reroute your connection from your internet service provider to a remote VPN, the VPN replaces your real IP address with a dummy IP, rendering you untraceable to your internet service provider, advertisers, fraudsters, and the state.

What are the advantages of using a VPN? ›

If you're still not convinced whether or not you need a VPN, here's a list of ten benefits that can change your mind.
  • Access Geo-blocked Sites and Services. ...
  • Greater Network Scalability. ...
  • Reduce Staffing Costs. ...
  • Protect Your Personal Data. ...
  • Protect Your Network Against Tracking. ...
  • Avoid Data Throttling. ...
  • Prevent Bandwidth Throttling.

What is VPN and is it worth having? ›

A VPN is privacy software that routes your internet connection through an encrypted tunnel to a secure server in another location. In doing so, the VPN does two main things: It encrypts your internet traffic and it masks your IP address.

Why is VPN used in companies? ›

VPNs can securely connect a user to a company's internal network or to the public Internet. Businesses typically use a VPN to give remote employees access to internal applications and data, or to create a single shared network between multiple office locations.

How to use a VPN and why? ›

The basic process for using a VPN is to install a VPN app on your device, fire it up, log into your account and select a server. For the fastest speeds, you'll typically want to choose a server geographically nearby, but for accessing region-specific content, pick a VPN server in your desired country.

What a VPN really does? ›

VPN stands for "virtual private network." VPNs encrypt your internet traffic and your identity online, making it harder for third-parties to break in and steal your data.

How do you explain VPN to a child? ›

VPN is short for Virtual Private Network. It's main security function is privacy protection. The privacy obtained through this private network is one of the reasons VPN's get a bad name. However, when it comes to cyber security, personal privacy protection is a cornerstone of Internet safety.

What is the use of an Azure VPN client? ›

The Azure VPN Client lets you connect to Azure securely from anywhere in the world. It supports Azure Active Directory, certificate-based and RADIUS authentication. The Azure VPN Client lets you connect to Azure securely from anywhere in the world.

What is the difference between Azure VPN and direct access? ›

Where DirectAccess provides access to all internal resources when connected, Always On VPN allows administrators to restrict client access to internal resources in a variety of ways. In addition, traffic filter policies can be applied on a per-user or group basis.

What is the difference between a VPN and a gateway? ›

A VPN is a service that encrypts a user's internet connection for privacy and security, while a VPN gateway is a specific type of network device that manages and secures VPN connections for multiple networks or users, acting as a secure access point.

What is the difference between a VPN and a VPN server? ›

If you had a job that required you to be on the road a lot, but you still needed to access your work PC remotely in an office, then you would want a VPN server. A VPN server is nothing more than a software program than runs on your office PC 24 hours a day, waiting for you (the VPN client) to connect to it remotely.

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