Packetpass

An ebpf program that allows packets only on a specifc port

usage

pip install bcc

start a small webserver

curl -o main.go https://raw.githubusercontent.com/s1ntaxe770r/pong-server/master/main.go && go build -o pong main.go && chmod +x pong; ./pong -port ":4040"

Without packetpass

With packetpass