p2p: Prevent block index fingerprinting by sending additional getheaders messages #24571 - Githubissues

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Bitcoin Core PR Review Organising repo

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p2p: Prevent block index fingerprinting by sending additional getheaders messages #24571 #13

Closed rajarshimaitra closed 1 year ago

rajarshimaitra commented 1 year ago

Session Details

Date: 23-02-2023
Time: IST 20:00 (UTC 14:30)
PR: https://github.com/bitcoin/bitcoin/pull/24571
Context: [net][net_processing]
Difficulty: Moderate
Language: [c++][python]
Notes and Questions: https://bitcoincore.reviews/24571

Summary

This PR adds extra logic in the net processing module to increase resistance against a particular network fingerprinting attack.

Learnings

P2P Networks.
Fingerprinting attacks.
Various forms of defense against fingerprinting.
Network messaging protocol between nodes.
Testing P2P behaviors in functional test.