Strong encryption VPN for ultimate privacy

Astrill VPN gives your Internet traffic the most secure protection of military grade encryption.

VPN for strong encryption
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Securing web traffic

Securing you web traffic with the strongest encryption

With Astrill VPN, you don't only get complete anonymity but highest level of privacy and security for everything you do on the Internet. Our military grade end-to-end encryption means it's only you who can access and read the data coming to and from your device.

While AES-256 is our default choice for encryption cipher in protocols such as OpenWeb and StealthVPN, we give you the option to select other ciphers for OpenVPN connection. Currently all our OpenVPN servers support BlowFish 128, BlowFish 192, BlowFish 256, BlowFish 448, AES 128, AES 192, AES 256, CAST 128, CAST 192, CAST 256, CAST 512, CAMELLIA 128, CAMELLIA 192 and CAMELLIA 256.

Enjoy ultimate privacy on any device

Astrill VPN is compatible with
Windows Windows
macOS macOS
Linux Linux
Apple TV Apple TV
Router Router
iPhone iPhone
iPad iPad
Android Phone Android Phone
Android Tablet Android Tablet
Boxee Boxee

What is encryption and how does it secure my web traffic?

While encryption is a complex subject, the basic idea is to encode the Internet traffic in such a way that it can only be decoded by two devices i.e. of the sender and receiver. If anyone including hackers, cyber attackers, ISP or government intercepts traffic coming to or from your device, all they will see is cryptic code that won't make any sense.

There are different encryption protocols, some are easier to decode as compared to the others. However, Astrill uses the strong encryption of AES-256 bit that is next to impossible to crack. So, if anyone intercepts your web traffic, they basically see nothing. That means your privacy remains intact even if someone is snooping on you and your Internet activity.

Enjoy strong encryption

What Does 256 Bit Mean?

256 reflects the key length of the encryption. Key length is the number of bits in the algorithm. The more bits there are, the harder it becomes to crack the algorithm.

Key lenght Possible combination encryption strength
1-bit 2 Brake lock
8-bit 256 Brake lock
16-bit 65,536 One lock
32-bit 4,200,000,000 One lock One lock
64-bit 18,000,000,000,000,000,000 One lock One lock One lock
128-bit 340,000,000,000,000,000,000,000,000,000,000,000,000 One lock One lock One lock One lock
256-bit 110,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

Just to put the above table into perspective, the most powerful computer in the world will take 885 quadrillion years to crack a 128-bit AES key. Number of operations required to crack a 256-bit key is 331,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000; pretty much equal to the number of atoms in the world.

Nobody will be able to decrypt your Internet traffic even if they ran all the supercomputers simultaneously for billions of years.

Protocols for strong encryption VPN

Apart from key length, it's the VPN protocol that holds high importance. They are the mechanism or standard through which encryption is implemented. Astrill's dedication toward providing a VPN with strong encryption means you get the choice of choosing from the most popular and secure VPN protocols including OpenVPN and IPSec. It is recommended to use the default VPN protocol. Astrill VPN is designed to automatically pick the protocol that's safer, speedier and securer.

vpn server

Server authentication

Ensures the server your device is establishing connection with is secure.

Data protection

HMAC authentication

Protects your data in transit from being modified or altered.

Quick Detects

Control-channel encryption

Quickly detects even the most minor of interruptions in the channel.

Safe traffic

Perfect forward secrecy

Keeps your traffic safe from decryption in the event of your device being compromised.

Ensures your data

Data-channel encryption

Ensures your data is not visible to entities through whose servers it's travelling.

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Thousands of satisfied reviews


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