Client to send SPA packets to a fwknopd server
About this app
Allows you to send packets to an fwknopd service to remotely open ports on a Linux machine or a router running OpenWrt. Fwknop2 has the ability to launch an ssh client to start the login process through the newly opened port. It also includes the ability to import keys via QR codes.
Licensed under GPL-2.0-or-later, by Jonathan Bennett.
What's New in v1.2.3
Imported from the F-Droid repository index.
Version history
Sep 19, 2016 · 2.6 MB · Android API 16–24 · code 32
Imported from the F-Droid repository index.
SHA-256 7d8f1c4ea9e918ee3df086ac1f5b561f91a8af2e33a40d7b8b277e81f7bdc5cf
Sep 19, 2016 · 2.6 MB · Android API 16–24 · code 31
Imported from the F-Droid repository index.
SHA-256 b2151a4b73082cda77532a39d6de3d175d04828a2c373b106cc74e4611bdf76d
Feb 12, 2016 · 2.1 MB · Android API 15–23 · code 23
Imported from the F-Droid repository index.
SHA-256 e14bdd9b20f9cafdf584ddcc80725e40c991769ffc1ff3fe6f3683bdada1a960
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.cipherdyne.fwknop2 is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.2.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Fwknop2 first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Fwknop2, and a listing is removed when the evidence for it stops holding up.
Get Fwknop2
Every source we list for org.cipherdyne.fwknop2 is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
7d8f1c4ea9e918ee3df086ac1f5b561f91a8af2e33a40d7b8b277e81f7bdc5cf
Signing certificate
20f22140f0476d3a564656fa1abec0b49c7cbcbae7bb2c340736c4cb3795b57c
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.