Is it possible to disable ping the server?

Question

linux

Is it possible to prevent users from any ip from pinging a server on ubuntu?
Sometimes I feel like it's done on purpose...

Answer 1

Can. Close the firewall protocol ICMP.

Answer 2

Can. What for?
Disabling ICMP will create more problems for you than it solves. If you want to disable it by all means, you need to disable not all icmp, but only 0 and 8 (echo reply and echo request)

Answer 3

No need to close the entire icmp. Close only ICMP type 8, Echo request. That's just ping. All other icmp requests will work.

Answer 4

Well, yes, on purpose. And why does it bother you?
As a rule, the prohibition of ping, etc. ICMP in its entirety creates many problems and does nothing to solve existing problems.

Answer 5

For what purpose are you going to close the ping? What threat does he pose in your opinion?
In most cases, the ping is open or closed - neither cold nor hot.

Answer 6

You can, close icmp with a farvol, but arping will be available for example.

Answer 7

echo 1 | sudo tee /proc/sys/net/ipv4/icmp_echo_ignore_all