[julinhobrow]

you can use cloudflare for domains but for vps only with firewall closing doors

this can be a fast solution

close ping request in centos:
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all

to activate:
echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all

this is a fast solution not a better

try learn about iptables and firewall( how use csf)