Knock on Ports

Alexander Yaburov

About this app

"Knock on Ports" is a port knocking client compatible with knockd, icmpKNOCK and other port knocking servers.

Features:
- UDP/TCP/ICMP sequences
- IPv4 and IPv6 support
- customizable content of UDP and ICMP packets
- ability to start another application after a knock
- Tasker integration
- interpacket delays
- sequence shortcuts
- customizable widget
- data export/import
- free, no ads, open source

Ratings and reviews

When using domain name, the app uses the IPv6 address. It would be nice to be able to select either IPv4 or IPv6. It is also very annoying that I always have to switch from UDP to TCP for EVERY entry. When switching from UDP to TCP for one entry, the app jumps down to the latest entry. So if I want to change multiple entries, I always have to scroll back up. Bute besides these issues, the app works fine.

THE king of port knockers on android. Look no further. All the others are just toys with zero flexibility and don't come even close. Now even more powerful with ICMP and TCP mixing.

Using Samsung Dex on Galaxy Fold Z4 Android 14 I could not access the port fields and had to create/import a json config (might be an edge case). Otherwise, great app that works as advertised.

What's new

Minor update to comply Google requirements