PortKnock 4.18

PortKnock 4.18

Danny Sung  ❘ Commercial
iOS
out of 7 votes
Latest Version
4.18
Safe to install

PortKnock: Secure Your Network with Ease

Boris Weber

PortKnock by Danny Sung offers an intuitive and efficient solution for enhancing network security through port knocking, making unauthorized access significantly more challenging.
2025 Editor's Rating
EXCELLENT User Rating

Overview

  • This application is a simple port knocker for the iPhone, primarily useful for network administrators. It requires a port knock daemon to be running on the server for functionality.

Features in this version of Port Knock:

  • Password Protection
  • Knock Validation
  • Import/Export Hosts
  • Auto App Launcher(+)
  • Knock Progress Screen
  • Shows your External IP Address
  • Arbitrary number of ports per host
  • An unlimited number of host definitions
  • TCP/UDP configuration per port
  • Selectively sending knocks through WiFi or Carrier/3G networks
  • Configurable interpacket delay
  • No advertising

Use Cases

  • This app is convenient when on a WiFi network without access to a port knocker on available computers. It can also be effectively used with TouchTerm or any other ssh or telnet software by providing the hostname and a list of ports with the choice of sending TCP or UDP packets.

Brief Description of Port Knocking for the Layman:

  • Port Knocking is a security technique to protect services behind a firewall until a specific knock sequence is given, distinct from port scanning which is used for discovering open services on a system.
  • Imagine leaving your kids at home alone. You teach them to listen for a certain knock that only your family knows, similar to how servers can be instructed to respond to specific knocks sent via this application.

Additional Info

  • If you require a knock server, Judd Vinet's knock daemon for Linux is recommended due to its ease of use: http://www.zeroflux.org/projects/knock
  • For more information and resources on port knocking, visit http://www.portknocking.org/

Notes

  • + Some limitations apply to the Auto App Launcher feature; for SSH, only temporary connections can be created, and Mail operations may initiate a new compose mail window first due to iOS integration constraints.

Support

  • To report bugs and suggest features, contact [email protected] for prompt assistance rather than posting in reviews.

History

  • 2022-02-28 PortKnock 4.18 released with restored functionality of Auto App Launcher and resolved import bugs.

Overview

PortKnock is a Commercial software in the category System Utilities developed by Danny Sung.

The latest version of PortKnock is 4.18, released on 07/15/2024. It was initially added to our database on 07/15/2024.

PortKnock runs on the following operating systems: iOS.

Users of PortKnock gave it a rating of 5 out of 5 stars.


Boris Weber

Boris Weber

I am an editor at UpdateStar. I started as a support engineer, and am now specialized in writing about general software topics from a usability and performance angle among others. I telecommute from UpdateStar’s Berlin office, when I am not working remote as a digital nomad for UpdateStar. When I'm not analyzing the latest software updates, you can find me exploring new cities, immersing myself in local cultures, and discovering innovative tech trends across the globe.

Latest Reviews by Boris Weber

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