FwKnop-ng

FwKnop-ng is an Android client for fwknop (Single Packet Authorization). It sends an encrypted, authenticated SPA packet that makes a fwknopd server open a firewall port for your IP address.

Features

• Rijndael (AES) and GPG (via OpenKeychain) encryption, HMAC authentication


• Configurations stored encrypted (Android Keystore, Tink, SQLCipher)


• Optional app lock (biometrics or device credential)


• Encrypted backup and restore of all configurations


• Import/export of configurations through QR codes


• NFC tag triggered knocks

Note: configurations are bound to the device's Android Keystore. Removing the screen lock or a factory reset makes them unrecoverable: keep your fwknop keys elsewhere, or use the encrypted backup.

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