An eBPF code to allow traffic only at a specific TCP port (default 4040) for a given process name ("myprocess"). All the traffic to all other ports for only that process are be dropped.

myprocess tries to bind to two ports namely 4040 and 8080 . Our goal is to allow the 4040 port bind by prevent 8080 port bind. This is illustrated bellow.

Now lets say we opened another process named "s" which performs the same operations. We would not drop port 8080 bind attempt and allow all packets.