Illustration of OpenVPN on the ProtonVPN iOS app.

Proton VPN iOS app now supports the OpenVPN protocol

Your Proton VPN iOS app is now better equipped to fight censorship and offers more flexible connection options with the launch of OpenVPN for iOS.

The OpenVPN protocol is one of the best VPN protocols because of its flexibility, security, and because it is more resistant to blocks. You now have the option to switch between the faster IKEv2 protocol and the more stable and censorship-resistant OpenVPN protocol.

The rollout of OpenVPN for iOS is part of a larger push at Proton to provide more tools to bypass censorship. As more people turn to online tools that keep their personal information safe, some governments and companies have taken more steps to undermine that privacy, including censorship. That’s why we have invested in features like alternative routing(new window) and OpenVPN for Android(new window) to help you stay securely connected to our servers no matter where you are.

Find out more why you need a VPN app for your Android phone or tablet.(new window)

OpenVPN has many benefits over other protocols

There are multiple VPN protocols, and each has benefits and drawbacks. We have previously compared the different VPN protocols(new window) in depth on our blog. 

Aside from having no known vulnerabilities, the OpenVPN protocol is great for two main reasons: It’s flexible, and it’s more difficult to block.

Flexibility

OpenVPN’s most useful feature is that it allows you to choose between two transport protocols: Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). We explain the difference between TCP and UDP(new window) in more detail elsewhere, but basically UDP is faster and TCP is more stable. 

OpenVPN connects via UDP by default, but if you have a weak Internet connection you might have better luck switching to TCP.

Bypass censorship

That flexibility also serves to mitigate censorship and local network blocks. The IKEv2 protocol, the other option on our app, uses UDP on a well-defined port, which is easier to block and is not necessary for web browsing without a VPN. Your employer or school may also choose to block certain ports to restrict VPN usage on their network, and governments can exploit this limitation for censorship.

TCP, on the other hand, can use numerous ports. We configured our TCP connection to use several ports, including the port that handles HTTPS-encrypted Internet traffic. This makes it more difficult to block without cutting off access to the Internet.

With OpenVPN, you can toggle between UDP and TCP, giving you more freedom to access the Internet unrestricted.

Next steps

Eventually, we want to make it easier for you to connect to the best protocol. Our Smart Protocol feature will help with this by automatically switching to the best protocol for your situation. This feature is already implemented in the Windows(new window) and Android(new window) apps, and soon it will also be available on our iOS and macOS apps. Sign up for a Free plan for iOS.(new window)

We look forward to increasing Proton VPN’s resilience and accessibility as part of our mission to create a safer Internet. This work would not be possible without your support. Thank you.

Follow us on social media to stay up to date on the latest Proton VPN releases:

Twitter(new window) | Facebook(new window) | Reddit(new window) | Instagram(new window)

Get a free Proton Mail encrypted email account(new window)

Protect your privacy and security online
Get Proton VPN free

Related articles

Paris Olympics
The 2024 Summer Olympics in Paris begins this July. While you’ve likely already missed your chance to get a ticket and witness the best athletes from around the world in person, there are plenty of ways to enjoy the games from the comfort of your hom
Where to watch euros
Every four years, the entire continent of Europe turns its eyes to see who will be crowned as the continent’s champion of football (or soccer for the Americans).  This is the 17th edition of the UEFA European Football Championship, in which 24 natio
How to enable location services
Location services refer to a combination of technologies used in devices like smartphones and computers that use data from your device’s GPS, WiFi, mobile (cellular networks), and sometimes even Bluetooth connections to determine and track your geogr
What is AirTag stalking?
In an era of “smart devices” that often double as spy devices, AirTags are tracking tools that are open about their function and can be vital in helping locate lost items (as anyone who has lost their car keys can attest to). However, as a recent cla
How to fix a "Your connection is not safe" error
As you surf the web using your browser, you’ll no doubt encounter websites that your browser will refuse to load, instead showing some variation of an error message, such as Your connection is not private or Warning: Potential Security Risk Ahead. 
Your search history is a window into your inner life. Anyone with access to it knows what your hobbies and interests are, your sexual orientation and preferences, the things that worry you (for example your medical concerns), your political affiliati