# PortKnock — user reviews

> 25 indexed App Store user reviews of PortKnock by Danny Sung, rated 5.00/5 from 9 ratings.

- Source: https://appshunter.io/ios/app/portknock/id358353536/reviews
- App overview in markdown: https://appshunter.io/ios/app/portknock/id358353536.md
- Rating breakdown: 5★ 9 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Newest reviews (5 of 25)

### 5/5 — Top!

*2012-11-14, version 3.0.833*

Erfüllt seinen Zweck zuverlässig und komfortabel.

### 5/5 — Great!!!

*2011-11-14*

Works great!
Allowed me to punch in thru FireWall and setup a session.

Then auto close when done

### 5/5 — Outstanding updated App!

*2011-07-23*

So many improvements to an already fantastic App; it's THE "bargain of the decade" for security!

If there were more "stars" to give I would definitely give them!

### 5/5 — Excellent!!

*2011-07-21, version 3.0.833*

Great App for a fantastic sollution. I recommend.

### 5/5 — Works as expected

*2010-04-02*

Quite a handy app for triggering port knock actions on my server. Simple and easy to use.

## Most critical reviews (10 lowest-rated)

### 1/5 — it's not same with knock on ports on android

*2026-04-10*

Knock on ports on android can setup sequence steps to knock the port, but this app can not do it

### 1/5 — Total garbage

*2019-08-17, version 4.13*

Looks and runs like it was written in an afternoon. Not user friendly at all. No guidance. No progress explanation. 

Oh and we use port knocking for all our servers so I'm not new to this. 

Learn from my lesson and save your money.

### 1/5 — Marche pas

*2011-06-10, version 2.02*

Une fois l'appli configuree elle plante et ne se lance plus. C'est scandaleux qu'Apple laisse des applis de ce genre payantes sur le store. J'en ai marre d'etre une vache a lait.

### 1/5 — Doesn't work on my iPhone 4 w/iOS 4.2.1

*2010-12-11*

I have port knocking set up at home and I was looking forward to being able to knock from my iPhone.  I downloaded this app (PortKnock v2.01) and it will not allow me to enter a host to knock.  When I try to enter a host, the field will flash blue but no keyboard ever comes up for me to enter data.  My assumption is that this app needs an update in order to work with iOS 4.2.1.  Until that time it's useless with an iPhone 4 running the latest version of iOS (4.2.1 as of this writing).

### 1/5 — Does not work over 3G no good

*2010-09-09, version 0*

Don't buy this doesn't work over 3G. 
Only wifi. But you might as well get the lite.

### 3/5 — Please optimize for iOS 8

*2014-10-29*

Please optimize for iOS 8. Crush on iPhone 6 on iOS 8

### 4/5 — Glad I found this

*2016-07-03, version 3.3*

Just recently setup knockd on my vps and didn't think to check if there was an iOS app. Luckily there is and it works on ios9. When switching between wifi and 3G it did have problems picking up my 3G but closing and reopening fixed this.  Would be nice if the graphics could be updated to suite ios9 better, other than it works great.

### 4/5 — Has been great but forgets settings

*2013-09-18, version 3.3*

It has been a great app, but on my iPhone 5, I need to edit one of the hosts over and over again as it resets to previous settings. Also, gives Cocoa error messages quite often. Please fix it.

### 4/5 — Tut was es soll

*2011-11-14, version 3.0.833*

Prüft auch anhand eines konfigurierbaren Ports, ob der Knock geklappt hat.
Einziges Problem: https://host:4444/ kann nicht automatisch geöffnet werden.

### 4/5 — Works, but could be better

*2010-10-14*

Works as advertised, but I would like to have the ability to copy hosts. It takes to many taps to enter port sequences.

## Most praised reviews (10 highest-rated)

### 5/5 — Does what it says and the price is nice

*2025-12-19*

I got tired of opening my laptop to knock any time I got to a new place. Now I can knock from my phone and connect without the extra steps. 99 cents and it’s a no brainer. No ads, no crapware, it just works

### 5/5 — Great for DevOps

*2024-09-07*

Thank you for this great tool. Using this tool I was able to secure my server ports even more! I really suggest every devops engineer to setup port knocking on their SSH port.

### 5/5 — Does port knocking well

*2023-03-03*

Simple and does exactly what I need to unlock my network services

### 5/5 — Fantástico - Fantastic APP

*2018-07-15, version 4.13*

Fantastic APP to tecnology professional.

### 5/5 — Straightforward app, with right features and engaged developer

*2018-03-13*

It works, it does what you want, and the developer is friendly and helpful if you find a bug.

### 5/5 — Finally

*2018-01-08*

Finally, a port knock client that works on iOS.

### 5/5 — Works well

*2015-03-03*

Having used the app for several weeks and on several servers I am very happy. I never have to repeat the knock sequence and haven't found any bugs.

### 5/5 — Just what I needed

*2014-12-17, version 3.3*

This works perfectly on iPhone 6 iOS 8.1.2. Works fine over 3G and wifi. Just be aware that your 3G operator may filter some tcp traffic through random ports - I had this problem so set up my knock server for udp and it solved it. So the previous reviewer may have had this problem - the app works fine.

### 5/5 — Indispensable

*2013-08-13, version 3.3*

La version lite ne permet pas de lancer ssh tout de suite après. Cette version complète en revanche le fait, et c'est la seule application que je connaisse qui fait du port knocking.

### 5/5 — Super

*2013-03-31, version 3.2*

Starte hiermit auf meiner gefreetzten Fritzbox den pptp vpn server, und beende ihn auch wieder mit dieser app.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*