There are 1 repository under port-knock topic.
Layer 4 Single Packet Authentication Linux kernel module utilizing Netfilter hooks and kernel supported Berkeley Packet Filters (BPF)
A port knocking code, written in python3
Enable/Disable ports on windows using sequences of SYN packets sent to defined ports
A port knocking program that works off of periodically changing sequences.
Bash script for knocking on TCP and UDP ports. No dependencies.
Simple port knocking client written in GoLang
Simple scripts for generating one time sequences for knockd and for knocking a host with either netcat or nmap