ICMP Message
Type Keywords
ICMP Message Type Name
administratively-
prohibited
Administratively prohibited
alternate-address Alternate host address
conversion-error Datagram conversion error
dod-host-
prohibited
Host prohibited
dod-net-
prohibited
Net prohibited
echo Echo
echo-reply Echo reply
general-
parameter-
problem
Parameter problem
host-isolated Host isolated
host-precedence-
unreachable
Host unreachable for precedence
host-redirect Host redirect
host-tos-redirect Host redirect for TOS
host-tos-
unreachable
Host unreachable for TOS
host-unknown Host unknown
host-unreachable Host unreachable
information-reply Information replies
information-
request
Information requests
mask-reply Mask replies
mask-request Mask requests
mobile-redirect Mobile host redirect
net-redirect Network redirect
net-tos-redirect Network redirect for TOS
net-tos-
unreachable
Network unreachable for TOS
net-unreachable Network unreachable
network-
unknown
Network unknown
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Access Control Lists (ACL)
