Is Knock on Ports safe?

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…

Developer: Alexander Yaburov
Category: Security
Earliest archived version: 11 Jun 2026
License: Apache-2.0 (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

11 Jun 2026

2.1.10

New language localization: Ukrainian (credit to ) • New language localization: Portuguese (credit to )

Full notes →

03 / Package identity

Technical fingerprint

Application IDme.impa.knockonports

Latest APK SHA-256687c38eae29852e1544269be2816050aac8398ed08e8e08dc6a705f35df2592c

Signing certificate16:8F:6F:65:55:A8:43:8F:8D:AC:95:9E:B8:86:11:2E:33:E1:BE:EC:22:E9:10:EB:BA:62:F3:B8:29:9F:3A:3F

MIN ANDROID24TARGET37ARCHITECTUREarm64-v8a · armeabi-v7a · x86 · x86_64

04 / Version archive

Documented releases

1 TOTAL

VersionReleasedAndroidArchitecture

2.1.1011 Jun 202624+arm64-v8a, armeabi-v7a, x86, x86_64→

05 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceOpen-source · fdroid

Permissions9 declared · 0 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessNo sensitive permissions

Declared permissions

android.permission.ACCESS_NETWORK_STATE android.permission.FOREGROUND_SERVICE android.permission.INTERNET android.permission.POST_NOTIFICATIONS android.permission.RECEIVE_BOOT_COMPLETED android.permission.USE_BIOMETRIC android.permission.USE_FINGERPRINT android.permission.WAKE_LOCK me.impa.knockonports.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

06 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗