Improving SSH security by changing Port#, Changing IP Table Rules, Allowing only certain Port numbers, Installing Port Knocking

A port knocking program that works off of periodically changing sequences.

A port knocking code, written in python3

Simple scripts for generating one time sequences for knockd and for knocking a host with either netcat or nmap

Bash script for knocking on TCP and UDP ports. No dependencies.

A simple port knocker. Given a host, looks up its port sequence and knocks on it.

A simple Python port knocker

Enable/Disable ports on windows using sequences of SYN packets sent to defined ports

A port knocking daemon

Encrypted Port Knocking Tool

Port-knocking client with multiple hosts support

🚪 A port knocking client written in Go

Will's custom bag of pentesting tools.

Port Knocking attack tool

Not your average port knocker. A web-based service written in pure PHP that opens protected TCP and UDP ports in response to encrypted requests from a correctly configured client for a limited but renewable time period. MIT or LGPL.

Hybrid Port Knocking System

🚪👊 Yet another port knock client

UDP port knocking suite with HMAC-PSK authentication.

Authenticating port knocker - Written in Rust

Layer 4 Single Packet Authentication Linux kernel module utilizing Netfilter hooks and kernel supported Berkeley Packet Filters (BPF)