Red Hat Enterprise Linux 9 Essentials Book now available.
Purchase a copy of Red Hat Enterprise Linux 9 (RHEL 9) Essentials
Red Hat Enterprise Linux 9 Essentials Print and eBook (PDF) editions contain 34 chapters and 298 pages
2.6.2.4.3. ICMP Protocol
The following match options are available for the Internet Control Message Protocol (ICMP) (-p icmp):
--icmp-type — Sets the name or number of the ICMP type to match with the rule. A list of valid ICMP names can be retrieved by typing the iptables -p icmp -h command.
