New in version 2.1.0
• Wear OS support (GMS version only)
• Extended progress information in notifications
• Bugfixes
A utility for executing port knocking sequences to discreetly open access to services protected by firewalls. Configure custom sequences using UDP, TCP, or ICMP packets with support for both IPv4 and IPv6.
Key Features:
• Protocol Flexibility: Create sequences with UDP, TCP, or ICMP packets. Fine-tune parameters including destination ports, inter-packet delays, TTL, Hop Limit, and packet payload data.
• Automation & Integration: Automatically launch applications (e.g., SSH clients) or open URLs upon a successful knock. Supports integration with other tools via a custom URI scheme for advanced automation.
• Dual-Stack Support: Full compatibility with IPv4 and IPv6 networks.
• Quick Access: Utilize home screen shortcuts and a widget for immediate execution of configured sequences.
• Customization: Adjust the interface with dynamic color themes (Android 12+), custom accents, and light/dark modes. Includes options for improved contrast.
• Configuration Management: Export and import your knocking sequences for backup or transfer.
• No Ads, Open Source: A free, transparent application focused on privacy and user control.
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
me.impa.knockonports.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
8.9 MiB
PGP Signature
|
Build Log
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
me.impa.knockonports.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
8.9 MiB
PGP Signature
|
Build Log
New in version 2.0.14
• Bug fixes and stability improvements.
• New option to set UDP payload size separately from its content.
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
run foreground service
Allows the app to make use of foreground services.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
me.impa.knockonports.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
8.9 MiB
PGP Signature
|
Build Log
