Port knocker client; supports one time sequences
About this app
Port Knocker is a port knocking utility application for Android.
Features:
* Ability to save/use profiles * Supports one time sequences, automatically rotates port sequence when sequence list is provided * Stores knock history * Ability to check open port after knocking, to check for a successful knock
Behavior notes:
* When using one time sequences and open port checking, sequence rotation will only occur if the port knock was considered successful. * If using the one time sequence feature, the next port sequence will be shown between in the parentheses in the profile list. * The connect timeout for each port knock is 1000 ms. * History will store the last 100 knocks.
Licensed under MIT, by Darnell Andries.
What's New in v1.0
Imported from the F-Droid repository index.
Version history
Dec 29, 2020 · 3.4 MB · Android API 19–30 · code 1
Imported from the F-Droid repository index.
SHA-256 f54d6d05f299ba2b2e7c351a411b9531ee7fd95b3af02d59cb50b74ef30ea017
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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 ca.andries.portknocker 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
No earlier build is on record for Port Knocker, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
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 Port Knocker, and a listing is removed when the evidence for it stops holding up.
Get Port Knocker
Every source we list for ca.andries.portknocker 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
f54d6d05f299ba2b2e7c351a411b9531ee7fd95b3af02d59cb50b74ef30ea017
Signing certificate
4b209f9bbdaf5230e394624589601b8d15f736e6e2f521456b90a1c0eb66542d
Permissions Required
What each permission lets Port Knocker do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
No earlier build is on record — this is the first release we have listed.
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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