lambda-nat-proxy – Serverless proxy using Lambda and UDP NAT punching
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.
In plain words
Lambda-nat-proxy is a serverless network proxy built on AWS Lambda that uses UDP NAT hole punching and QUIC tunnels to forward encrypted traffic. A client discovers its public IP via STUN, writes session data to S3 to trigger a Lambda function, and both endpoints punch UDP holes through their NATs before establishing a QUIC connection. It's designed for developers exploring unconventional uses of Lambda as a networking tool.
written from the facts on this page · September 2026
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