Port Knocking Tool
Port knocking is a procedure to secure the server or server services in networks to protect against unauthorized access. The ports used for communication are initially blocked by the server's firewall. A port knocking daemon monitors incoming SYN packets on the server, which, in the correct order, causes the daemon to make the corresponding blocked port accessible again. As soon as the server service is no longer required, the desired port can be blocked again by sending another sequence of SYN packets.
Port Knocking Tool is a Windows client with graphical user interface (GUI) to send the appropriate order of the SYN packets to the protected server. Both UDP and TCP packets are supported. The installation of Npcap is required for TCP. A console application is also included.
- Windows 7 SP1, 8 or 10
- .NET Framework 4.7.2
- optional: Nmap Project Paket Bibliothek (Npcap)
Port Knocking Tool can be downloaded free of charge and used for both private and business purposes.
The software is available under the MIT licence.
Port Knocking Tool neither creates telemetry data, nor other data is collected and sent to Epinox.de or third parties.
|Send:||The packet sequence selected in the list is sent to the protected server.|
|Add:||A new packet sequence is added to the list.|
|Modify:||Make changes to the sequence.|
|Remove:||The sequence is removed from the list.|
|Delay:||Enter the delay time in milliseconds between two IP packets.|
|Use Pcap:||To be able to send TCP packets as well, this option must be activated. An installation of Npcap is required.|
|Name:||Description that appears in the list|
|Sequence:||Enter the desired sequence
Format: port[:udp or :tcp][, ...]
|Program:||Program that is started after the sequence has been sent|
|Delay:||Delays program start in milliseconds after sending the sequence|
Version 1.2 [2020-05-15]
- Feature: console application added
- Bugfix: fixed issue when nothing was entered in the sequence form in program delay
- Design: sequence list is now sorted
Version 1.1 [2020-04-30]
- Feature: run external program after sending sequence
- Bugfix: value of delay beween packets is now used
- Update: PacketDotNet was updated to 1.0.5
Version 1.0 [2020-03-25]
- first release