ICMP Message
Type Keywords
host-tos-redirect
host-tos-
unreachable
host-unknown
host-unreachable
information-reply
information-
request
mask-reply
mask-request
mobile-redirect
net-redirect
net-tos-redirect
net-tos-
unreachable
net-unreachable
network-
unknown
no-room-for-
option
option-missing
packet-too-big
parameter-
problem
port-unreachable
precedence-
unreachable
protocol-
unreachable
reassembly-
timeout
redirect
router-
advertisement
router-solicitation
Access Control Lists (ACL)
ICMP Message Type Name
Host redirect for TOS
Host unreachable for TOS
Host unknown
Host unreachable
Information replies
Information requests
Mask replies
Mask requests
Mobile host redirect
Network redirect
Network redirect for TOS
Network unreachable for TOS
Network unreachable
Network unknown
Parameter required but no room
Parameter required but not present
Fragmentation needed and DF set
All parameter problems
Port unreachable
Precedence cutoff
Protocol unreachable
Reassembly timeout
All redirects
Router discovery advertisements
Router discovery solicitations
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