Download I2P

Dependency

Java Runtime 1.5 or higher. (Oracle/Sun Java Version 6, OpenJDK 6, or IcedTea6 recommended)
Determine your installed Java version here or type java -version at your command prompt.

Clean installs

• Windows Graphical installer:
  i2pinstall_0.9.5-win1_windows.exe (SHA256 d64101793764bf77ac3dfc2352677b3d06eef3b6ecb4fa0cf2cf43fc237302f8 sig)
  Download that file and run it.
• Linux / BSD / Solaris Graphical installer:
  i2pinstall_0.9.5.jar (SHA256 af251596e034b751dc17b73bd35254b94f92d4a3121a6e96479c45c4d846ab30 sig)
  Download that file and double-click it (if that works) or type java -jar i2pinstall_0.9.5.jar in a terminal to run the installer. On some platforms you may be able to right-click and select "Open with Java".
• Linux / BSD / Solaris Command line (headless) install:
  Download the graphical installer file above and run java -jar i2pinstall_0.9.5.jar -console from the command line.
• Packages for Debian & Ubuntu
• OS X Graphical installer:
  i2pinstall_0.9.5.jar (SHA256 af251596e034b751dc17b73bd35254b94f92d4a3121a6e96479c45c4d846ab30 sig)
  Download that file and double-click it (if that works) or type java -jar i2pinstall_0.9.5.jar in a terminal to run the installer. You may be able to right-click and select "Open with Java".
• OS X Command line (headless) install:
  Download the 0.9.5 OSX graphical installer file above and run java -jar i2pinstall_0.9.5.jar -console from the command line.
• Source install:
  i2psource_0.9.5.tar.bz2 (SHA256 441eac3cb7f25c03e7711c7d516626dc86ba6ad373145ab802d150848262c7c2 sig)
  Alternately, you can fetch the source from monotone.
  Run (tar xjvf i2psource_0.9.5.tar.bz2 ; cd i2p-0.9.5 ; ant pkg) then either run the GUI installer or headless install as above

The files are signed by zzz, whose key is here.

I2P can also be downloaded from our project pages on Launchpad and Google Code.

Post-install work

After running the installer on windows, simply click on the "Start I2P" button which will bring up the router console, which has further instructions.

On Unix-like systems, I2P can be started as a service using the "i2prouter" script, located in the directory you selected for I2P. Changing to that directory in a console and issuing "sh i2prouter status" should tell you the router's status. The arguments "start", "stop" and "restart" control the service. The router console can be accessed at its usual location. For users on OpenSolaris and other systems for which the wrapper (i2psvc) is not supported, start the router with "sh runplain.sh" instead.

When installing for the first time, please remember to adjust your NAT/firewall if you can, bearing in mind the Internet-facing ports I2P uses, described here among other ports. If you have successfully opened your port to inbound TCP, also enable inbound TCP on the configuration page.

Also, please review and adjust the bandwidth settings on the configuration page, as the default settings of 96 KBps down / 40 KBps up are fairly slow.

If you want to reach eepsites via your browser, have a look on the browser proxy setup page for an easy howto.

Updates from earlier releases:

Both automatic and manual upgrades are available for the release.

If you are running 0.7.5 or later, your router should detect the new release. To upgrade simply click the 'Download Update' button on your router console when it appears.

Due to a bug in release 0.7.6, those whose first I2P installation was that version and have not upgraded manually may get a "downloaded version is not greater than current version" error, and should use the manual update method below.

If you are running 0.7.4 or earlier, please see the 0.7.5 release notes for important information about how to configure your router to automatically receive the release.

If you are running 0.6.1.30 or earlier, please see instructions for important information about how to configure your router to automatically receive the release.

1. If you have reconfigured your router following the instructions, you should see a link on your router console allowing you to download and install the new release by just clicking on that link.
2. Alternately, you can use the manual method specified below.

Updates from earlier releases (manual method):

1. Download i2pupdate_0.9.5.zip (SHA256 d20c3f3845c1f4a4cf734dc69cae7de72ff0874cea1382d03d8ac953c50fb139 sig) to your I2P installation directory and rename as i2pupdate.zip. (alternately, you can get the source as above and run "ant updater", then copy the resulting i2pupdate.zip to your I2P installation directory). You do NOT need to unzip that file.
2. Click "Restart"
3. Grab a cup of coffee and come back in 11 minutes

The file is signed by zzz, whose key is here.

Previous Releases

Previous releases are available on Google Code and Launchpad and within the I2P network on echelon.i2p.