Port Knocker Client
About this app
A basic port knocker client. Also includes a widget and the ability to choose an application to launch after knocking.
Licensed under Apache-2.0.
What's New in v1.0.13
Imported from the F-Droid repository index.
Version history
Jun 16, 2021 · 1.7 MB · Android API 19–25 · code 14
Imported from the F-Droid repository index.
SHA-256 a753f6879188b422e1ec7791061c213de22bf235d36f2cc2b5241111480d34d6
Mar 3, 2017 · 2 MB · Android API 10–25 · code 12
Imported from the F-Droid repository index.
SHA-256 3829eceb2d6b5e18206ed08c53adbd358fc982de248e6bd9ef7499e0f2b07cb7
Jan 10, 2017 · 1.8 MB · Android API 10–23 · code 10
Imported from the F-Droid repository index.
SHA-256 49fb3aa275a169dfed81a8341761d167d84bd6044108df04484a74384e98e813
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 com.xargsgrep.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
If the current release misbehaves, 1.0.11 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Port Knocker 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 Port Knocker, and a listing is removed when the evidence for it stops holding up.
Get Port Knocker
Every source we list for com.xargsgrep.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
a753f6879188b422e1ec7791061c213de22bf235d36f2cc2b5241111480d34d6
Signing certificate
23d689834f80b6ee0a8e88c1a0b29ef22ee00f5e87330082a6ab6fa12a88e940
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
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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