Show HN: Nat traversal using ICMP Destination Unreachable packets

Category: other

Tags: nat-traversal, icmp-tunneling, network-protocol

Score: 6.5/10 (Innovation: 7, Technical: 7, Documentation: 6, Utility: 6)

A novel NAT traversal technique that leverages ICMP Destination Unreachable packets to tunnel data through UDP mappings, bypassing traditional NAT restrictions. It uses STUN for mapping discovery and crafts ICMP error messages to deliver payloads, making it interesting for circumventing restrictive networks without server-side infrastructure changes.

Target audience: backend devs, network engineers, security researchers

Repository: https://github.com/hajoon22/icmp-nat-traversal · C · MIT · 1 stars

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