How to disable ping to the local network?

Question

VPN

I have Windows server 2019, Ubuntu 20.01 is up via hyper-v, Ubuntu is connected via wireguard to an external server, and for some reason Ubuntu can ping 192.168.1.1, and other machines not connected to the server can ping it, I think , this is a potential vulnerability, because web hosting is set up on this machine, and now, in fact, the question is how to prohibit the use of the local network 192.168.0.0/16 for this machine?

Answer 1

for some reason ubunta can ping

this is normal

I think this is a potential exploit

No

how to ban

through the firewall