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I2P Node Integration

1 min read
Pronunciation
[I-2-P nohd in-tuh-gray-shun]
Analogy
Like running your internet traffic through a series of secure tunnels to hide your location and identity.
Definition
Connecting blockchain nodes to the Invisible Internet Project (I2P) anonymizing network to obfuscate IP addresses and protect node privacy.
Key Points Intro
I2P integration enhances censorship resistance and privacy for P2P blockchain nodes.
Key Points

Garlic routing: Encrypts and routes traffic through multiple hops.

Service tunnels: Expose node RPC/peer ports within I2P.

Addressing: Uses .i2p hostnames instead of IPs.

Performance trade‑off: Increased latency vs improved privacy.

Example
An Ethereum node binds its discovery and gossip protocols to I2P tunnels, preventing peers from learning its real IP.
Technical Deep Dive
Node config sets `--bootnodes` to I2P router .b32.i2p addresses. I2P router software creates inbound/outbound tunnels; blockchain client connects via SOCKS proxy on 127.0.0.1:7656.
Security Warning
I2P exit nodes can be malicious; restrict protocols and use end‑to‑end encryption.
Caveat
Not all peers support I2P; may reduce connectivity.

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