The Problem You're debugging a connectivity issue. ping works fine, but curl times out. The usual approach: Run traceroute with ICMP - looks fine Run traceroute with TCP - dies at hop 6 Manually compare each hop Finally identify the firewall/ACL What if you could see this in one command?

Source: [Dev.to](https://dev.to/biplabku/protocol-divergence-localization-finding-where-firewalls-block-your-traffic-514a)

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