Port Knocker

A basic port knocker client for Android. Similar to the other port knocker apps but with a nicer interface. Includes a widget and the ability to choose an application to launch after knocking. The media/storage permission is needed for the import/export feature which allows you to save your list of hosts and then load them later.Please don't hesitate to contact me if you encounter any bugs, or even if you just have suggestions.The code is open source and can be found at: https://github.com/xargsgrep/PortKnocker

Category : Tools

Reviews (24)

Nik. P. Dec 7, 2019

Does the job. Simple and easy to use. There is only one little request. It would be nice to have a copy/duplicate host function.

Hed. R. Apr 1, 2022

Does precisely what it says on the tin. I use knockd on Ubuntu and the two comm v. smoothly!

Nap. B. Nov 5, 2018

Tell me what is the use of this apps? My problem is i cant join in multiplayer game. The game said i need to port forward. I dont understand. Plss help

AJ. S. Feb 17, 2020

Excelent app does what it needs to do

Tzu. L. Jul 20, 2018

I can't select stock apps like Chrome in "launch applications", anyone?

Buc. K. Aug 16, 2019

being hacked

Les. H. Aug 15, 2017

Perfect. My only request is for an option to save and restore settings. That would be very useful for distributing knock codes among multiple devices or when changing phones.

Tim. C. Sep 27, 2017

The ability to control the delay between packets sets this application apart from many others. An excellent application!

Dev. R. Oct 12, 2017

Works great for TCP and UDP. I'd suggest adding ICMP knocking as well. For example ping a host with a custom byte size ping packet. Layer 7 string sending would also be a boon.

Ped. Y. Jul 6, 2017

Love the app, maybe improve on the visual look of the widget.

Mic. L. Dec 15, 2016

It does one job, and it does it well! I use this to pop open back doors into last resort access devices coupled with 2FA. This makes some of the other features of this app quiet attractive to me.

Ken. A. Sep 28, 2015

Only works on non-cellphone networks like wifi connections. My cell phone provider won't transmit these packets. There are two fields set to 00 in the packets that probably are the culprit. I'll have to keep looking for a port knocker that will work over 3G, 4G etc.

Roy. Q. Oct 12, 2016

No added fluff, plus it just works. This is exactly how applications should be. Works well with knockd on my laptop to let me get into my home network from my phone.

A. G. u. Mar 17, 2015

Would be great to be able to specify the contents of the packet though, I wanna send my own udp message!

A. G. u. Oct 24, 2015

Does exactly what it says on the tin. Many thanks to the developer!

ابو. ع. Apr 4, 2016

The best!

Sha. B. Aug 1, 2016

Simple and effective

A. G. u. Aug 8, 2015

Does what it says

Mic. E. Jan 7, 2015

could you please put ability to specify data to appear in packet as microtik routers allow checking of content, also it would nice if there was an option that allowed the program to send knock every N minutes in the background

sej. Feb 10, 2015

makes it rather useless

Ser. B. Nov 7, 2013

That exactly what I need. Thank you! /*if posible, please make icon more holo-styled */

A. G. u. Sep 27, 2012

Can't enter host name - won't allow a dot on S3

A. G. u. May 16, 2012

I am surprised that a port knocker looks nice and feels like a solid Android app, in addition to doing what it's supposed to do. Nice work! I also like the inclusion of a widget.

A. G. u. Sep 30, 2012

I am unable to enter any port number. When I am trying to be smart and use the paste function it clears all port fields.