I2P - Invisible Internet Project

What Is I2P?

I2P is an anonymous overlay network focused on internal services (eepsites). Unlike Tor which prioritizes accessing the clearnet anonymously, I2P is designed for communication within the network itself.

Garlic Routing

I2P Architecture

Garlic Routing bundles multiple messages:

[Msg1] + [Msg2] + [Msg3] = Garlic Clove

- Unidirectional tunnels (separate in/out paths)
- Messages bundled to resist traffic analysis
- Packet-based, not circuit-based
- All participants route traffic (no exit relays)

I2P vs Tor

Feature	I2P	Tor
Primary Use	Internal services	Clearnet access
Routing	Packet/Garlic	Circuit/Onion
Tunnels	Unidirectional	Bidirectional
Network Model	All nodes route	Volunteer relays
Outproxies	Limited	Many exits

I2P Services

Eepsites

Anonymous websites (.i2p)

Web

I2P-Bote

Serverless encrypted email

Email

I2PSnark

Anonymous BitTorrent

File Sharing

IRC/Chat

Anonymous messaging

Communication

Getting Started

Download I2P router (Java) or i2pd (C++)
Allow time to integrate into network
Configure browser proxy (127.0.0.1:4444)
Access router console at 127.0.0.1:7657
Explore eepsites via address book