Published on: 2025-06-27 20:17:29
Should I block ICMP? No!! The Problem Many network administrators feel that ICMP is a security risk, and should therefore always be blocked at the firewall. It is true that ICMP does have some security issues associated with it, and that a lot of ICMP should be blocked. But this is no reason to block all ICMP traffic! ICMP has many important features; some are useful for troubleshooting, while some are essential for a network to function correctly. Here are details of some
Keywords: code0 echo icmp ipv6 network
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