strongSwan VPN Client

4.1
2.95K reviews
500K+
Downloads
Content rating
Everyone
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About this app

Official Android port of the popular strongSwan VPN solution.

# FEATURES AND LIMITATIONS #

* Uses the VpnService API featured by Android 4+. Devices by some manufacturers seem to lack support for this - strongSwan VPN Client won't work on these devices!
* Uses the IKEv2 key exchange protocol (IKEv1 is not supported)
* Uses IPsec for data traffic (L2TP is not supported)
* Full support for changed connectivity and mobility through MOBIKE (or reauthentication)
* Supports username/password EAP authentication (namely EAP-MSCHAPv2, EAP-MD5 and EAP-GTC) as well as RSA/ECDSA private key/certificate authentication to authenticate users, EAP-TLS with client certificates is also supported
* Combined RSA/ECDSA and EAP authentication is supported by using two authentication rounds as defined in RFC 4739
* VPN server certificates are verified against the CA certificates pre-installed or installed by the user on the system. The CA or server certificates used to authenticate the server can also be imported directly into the app.
* IKEv2 fragmentation is supported if the VPN server supports it (strongSwan does so since 5.2.1)
* Split-tunneling allows sending only certain traffic through the VPN and/or excluding specific traffic from it
* Per-app VPN allows limiting the VPN connection to specific apps, or exclude them from using it
* The IPsec implementation currently supports the AES-CBC, AES-GCM, ChaCha20/Poly1305 and SHA1/SHA2 algorithms
* Passwords are currently stored as cleartext in the database (only if stored with a profile)
* VPN profiles may be imported from files

Details and a changelog can be found on our wiki: https://wiki.strongswan.org/projects/strongswan/wiki/AndroidVPNClient

# PERMISSIONS #

* READ_EXTERNAL_STORAGE: Allows importing VPN profiles and CA certificates from external storage on some Android versions
* QUERY_ALL_PACKAGES: Required on Android 11+ to select apps to ex-/include in VPN profiles and the optional EAP-TNC use case

# EXAMPLE SERVER CONFIGURATION #

Example server configurations may be found on our wiki: https://wiki.strongswan.org/projects/strongswan/wiki/AndroidVPNClient#Server-Configuration

Please note that the host name (or IP address) configured with a VPN profile in the app *must be* contained in the server certificate as subjectAltName extension.

# FEEDBACK #

Please post bug reports and feature requests via GitHub: https://github.com/strongswan/strongswan/issues/new/choose
If you do so, please include information about your device (manufacturer, model, OS version etc.).

The log file written by the key exchange service can be sent directly from within the application.
Updated on
Jul 13, 2021

Data safety

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4.1
2.95K reviews
A Google user
March 22, 2020
This is the absolute best VPN app out there bar none. Do others have more features? Yes. Do others have more options? Many do. This has just the right balance of options and ease of use and performs very well out of the box, unlike most. I recently learned that IKEv2 was a very robust protocol over mobile networks and switching network on the fly. You don't need the proprietary VPN on the play store that is blocked by half of the internet. This is much more stable and lighter.
53 people found this review helpful
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- Tingeling -
July 29, 2022
This is a great app to use on mobile phones, it ensures a seamless speedy connection. I use it in conjunction with IPVanish servers, it is a little fiddly to setup at first but you will be well rewarded with a very reliable connection. 👌
7 people found this review helpful
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A Google user
February 12, 2019
I used an old version of strongSwan for years, it was a custom version from my VPN provider. It was good, especially with battery life and network changes, but lacked many features offered with OpenVPN like excluding apps, so I used OpenVPN instead. But I've recently upgraded to the latest version of strongSwan and it's so much better now, with Always-On support and Split Tunneling for apps it has everything I need. It's great to have my battery back. Thanks to the whole team!
20 people found this review helpful
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What's new

# 2.3.3 #

- Adds a button to install user certificates

# 2.3.2 #

- Don't mark VPN connections as metered (the default changed when targeting Android 10 with the last release)

# 2.3.1 #

- Optionally use IPv6 transport addresses for IKE and ESP. Can only be enabled if the server supports UDP encapsulation for IPv6 (the Linux kernel only supports this since 5.8, so many servers will not support it yet)