How to log ping requests on a specific port on debian?

Question

linux

The task is to intercept ping requests to a specific server port and write the pinger's ip to a file

Answer 1

If you are talking about ICMP ping, then it does not have ports in the usual sense, only a type. If by the word "ping" you mean accessing a specific port from outside, then we read the documentation on iptables, especially on -j LOG, here with examples
help.ubuntu.ru/wiki/%D0%BC%D0%BE%D0% BD%D0%B8%D1%82...