Installation is very easy. Just download the .exe file. Then launch it with the java -jar command, like explained on the official site (and it works on Linux, yes !).

Now, if you want to access .i2p sites, like http://forum.i2p, you must configure your browser to use the I2P proxy: localhost:4444

If you don’t want to use the proxy when connecting to standard non-i2p sites, you can use the FoxyProxy Firefox extension.

You can also use a PAC (Proxy Auto-Config) file:

function FindProxyForURL(url, host) {
    if (dnsDomainIs(host, ".i2p")) {
        return "PROXY localhost:4444";
    } else {
        return "DIRECT";
    }
}

Then configure Firefox, or proxy configuration in Gnome to use the file:///path/to/proxy.pac file as configuration.

Warning: a bad eepsite (.i2p site), can detect your real IP address with that.

Links:

• http://www.i2p2.de/ I2P site
• http://forum.i2p/viewtopic.php?p=30030
• http://forum.i2p2.de/viewtopic.php?p=30030