About
ICMP types 1) can be used in Firewalld to limit the exchange of ICMP messages.
Command
List
firewall-cmd --get-icmptypes
address-unreachable bad-header beyond-scope communication-prohibited
destination-unreachable echo-reply echo-request failed-policy
fragmentation-needed host-precedence-violation host-prohibited
host-redirect host-unknown host-unreachable ip-header-bad neighbour-advertisement
neighbour-solicitation network-prohibited network-redirect network-unknown
network-unreachable no-route packet-too-big parameter-problem port-unreachable
precedence-cutoff protocol-unreachable redirect reject-route required-option-missing
router-advertisement router-solicitation source-quench source-route-failed
time-exceeded timestamp-reply timestamp-request tos-host-redirect
tos-host-unreachable tos-network-redirect tos-network-unreachable
ttl-zero-during-reassembly ttl-zero-during-transit unknown-header-type unknown-option