Here is a similar article by Daniel Stenberg the "curl" author. "Pretending port zero is a normal one" (Oct. 25, 2014) https://daniel.haxx.se/blog/2014/10/25/

Here is a similar article by Daniel Stenberg the "curl" author. "Pretending port zero is a normal one" (Oct. 25, 2014) https://daniel.haxx.se/blog/2014/10/25/pretending-port-zero-is-a-normal-one/ https://daniel.haxx.se/blog/2014/10/25/pretending-port-zero-... I'm suprised no one has used this port as an attack vector yet. I'm sure many even miss this port in there iptables.