Show HN: lambda-nat-proxy – Serverless proxy using Lambda and UDP NAT punching

1 danvittegleo 0 6/17/2025, 7:01:13 PM github.com ↗

Revisited an old experiment of mine (https://github.com/dan-v/awslambdaproxy): can AWS Lambda functions work as network proxies? This time using UDP NAT hole punching + QUIC tunnels.

Client discovers public IP via STUN, writes session data to S3, which triggers a Lambda. Both endpoints punch UDP holes through their NATs, then establish a QUIC connection for encrypted traffic forwarding.

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Show HN: lambda-nat-proxy – Serverless proxy using Lambda and UDP NAT punching

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