This repository contains the Fwknop2 client for using Single Packet Authorization from Android phones. Here are a few screenshots to illustrate Fwknop2 action. We start with the initial startup screen after installation:

![alt text][Fwknop2-startup] [Fwknop2-startup]: /doc/Android_fwknop2_startup.png "Fwknop2 Startup"

Now, add an encryption key and an HMAC key associated with a SPA server named "spaserver":

![alt text][Fwknop2-config] [Fwknop2-config]: /doc/Android_fwknop2_config.png "Fwknop2 Configuration"

Finally, send the SPA packet, and then SSH will be accessiable from the Android phone:

![alt text][Fwknop2-send-SPA-packet] [Fwknop2-send-SPA-packet]: /doc/Android_fwknop2_send_SPA_packet.png "Fwknop2 Send SPA packet"

Fwknop2 is released as open source software under the terms of the GNU General Public License v2 or later (GPLv2+). The latest release can be found at https://github.com/oneru/Fwknop2/releases

All feature requests and bug fixes are managed through github issues tracking.