OpenSnitch is a GNU/Linux port of the Little Snitch application firewall.
Warning: This is still alpha quality software, don't rely on it (yet) for your computer security.
The daemon is implemented in Go and needs to run as root in order to interact with the Netfilter packet queue, edit
iptables rules and so on, in order to compile it you will need to install the libpcap-dev and libnetfilter-queue-dev
libraries on your system, then just:
cd daemon
go build .
The user interface is a python script running as a gRPC server on a unix socket, to order to install its dependencies:
cd ui
pip install -r requirements.txt
First, you need to decide in which folder opensnitch rules will be saved, it is suggested that you just:
mkdir -p ~/.opensnitch/rules
Now run the daemon:
sudo /path/to/daemon -ui-socket-path /tmp/osui.sock -rules-path ~/.opensnitch/rules
And the UI service as your user:
python /path/to/ui/main.py --socket /tmp/osui.sock