Install fwknop-gui by entering the following commands in the terminal:
sudo apt update sudo apt install fwknop-gui
Description:
FireWall KNock OPerator Graphical User Interface
The FireWall KNock OPerator implements an authorization scheme called Single Packet Authorization (SPA), based on Netfilter and libpcap. . Its main application is to protect services such as OpenSSH with an additional layer of security in order to make the exploitation of vulnerabilities (both 0-day and unpatched code) much more difficult. . Fwknop GUI is a graphical user interface integrated with an Fwknop client that provides the ability to send SPA packets to a remote Fwknop server, as well as a front-end for creating and managing client configurations for multiple Fwknop servers. . It supports exporting saved configuration data to a QR code format readable by the Android client, as well as to the .fwknoprc format readable by the command line client.
Homepage: https://incomsystems.biz/fwknop-gui
Version: 1.3+dfsg-1build1
Section: universe/net