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I2P - FREQUENTLY ASKED QUESTIONS

Index

    General

  1. Whats an "eepsite"?
  2. My router has very few active peers, is this OK?
  3. What do the Active x/y numbers mean in the router console?
  4. My active peers / known peers / participating tunnels / connections / bandwidth vary dramatically over time! Is anything wrong?
  5. Is using an outproxy safe?
  6. Most of the eepsites within I2P are down?
  7. What ports does I2P use?
  8. I think I found a bug, where can I report it?
  9. What happened to *.i2p.net? What happened to jrandom? Is I2P dead?
  10. I have a question!
  11. Setup

  12. My router has been up for several minutes and has zero or very few connections
  13. Why is I2P so slow?
  14. I'm missing lots of hosts in my addressbook. What are some good subscription links?
  15. How do I set up my own eepsite?
  16. Bittorrent / I2PSnark / Azureus I2P Plugin Questions?
  17. How do I connect to IRC within I2P?
  18. I can't access regular Internet sites through I2P.
  19. I can't access https:// or ftp:// sites through I2P.
  20. Is it possible to use I2P as a SOCKS proxy?
  21. How can I access the web console from my other machines or password protect it?
  22. How can I use applications from my other machines?
  23. How do I reseed manually?
  24. My router is using too much CPU?!?
  25. Misconception

  26. How do I access IRC, BitTorrent, or other services on the regular Internet?
  27. Is my router an "exit node"(outproxy) to the regular Internet? I don't want it to be.
  28. I am opposed to certain types of content. How do I keep from distributing, storing, or accessing them?

I think I found a bug, where can I report it? (link)

Here are some places, pick one or more.

Please include relevant information from the router logs and wrapper logs.

I'm missing lots of hosts in my addressbook. What are some good subscription links? (link)

The default subscription is to http://www.i2p2.i2p/hosts.txt which is updated rarely. If you don't have another subscription, you may often have to use "jump" links which is annoying.

Here are some other public addressbook subscription links. You may wish to add one or two to your susidns subscription list. You don't need to add all of them, as they sync with each other periodically. The links using a cgi-bin application employ various strategies to minimize the number of duplicate addresses delivered, so they should be more efficient. Note that subscribing to a hosts.txt service is an act of "trust", as a malicious subscription could give you incorrect addresses. So think about whether you want to trust any of these. The operators of these services may have various policies for listing hosts. Presence on this list does not imply endorsement.

What happened to *.i2p.net? What happened to jrandom? Is I2P dead? (link)

Jrandom was the lead developer of i2p and Syndie for several years. We expect jrandom to be absent for at least the remainder of 2008. The *.i2p.net domains were left in a non-functioning state after a power outage at the hosting company.

See this page for jrandom's parting message and additional information on the migration of *.i2p.net to this website.

I2P is not dead, it remains in active development and we anticipate several releases in 2010.

My router is using too much CPU?!? (link)

There are many possible causes of high CPU usage. Here is a checklist:

I am opposed to certain types of content. How do I keep from distributing, storing, or accessing them? (link)

Hmm. I2P is an anonymous network, so that's a tricky one. I2P is designed for everyone and not to censor out some/any kind of data. The best way to keep your PC free of (encrypted) traffic you dislike is to not use I2P. Freedom of speech has some costs. But let's address your question in three parts:

My active peers / known peers / participating tunnels / connections / bandwidth vary dramatically over time! Is anything wrong? (link)

No. This is normal. All routers adjust dynamically to changing network conditions and demands.

My router has been up for several minutes and has zero or very few connections (link)

The reseed URL has changed. If this is your first install and you have installed an old (0.6.1.30 or earlier) release, or you have not run I2P in a long time, you must change the URL and then click "Reseed" on the console to find other routers. After your router is running, on configadvanced.jsp, add the line i2p.reseedURL=http://netdb.i2p2.de/ OR i2p.reseedURL=http://i2pdb.tin0.de/netDb/ (either should work), then click "Apply", then click the "reseed" link on the left.

This works if you are running 0.6.1.27 or later. If you are running release 0.6.1.31 or later, you probably don't need to do this. If you are running release 0.6.1.26 or earlier, either follow the manual reseed instructions below or install the latest release. Possible alternate method - add wrapper.java.additional.5=-Di2p.reseedURL=http://netdb.i2p2.de/ to wrapper.config, shutdown the router completely, then start again, then click "reseed". Let us know if this works.

My router has very few active peers, is this OK? (link)

If it has 10 or more, it is OK. Changes in releases 0.6.1.31 and 0.6.1.32 improved the efficiency of the router and effectively reduced the number of active peers. The router should maintain connections to a few peers at all times. The best way to stay "better-connected" to the network is to share more bandwidth.

Is my router an "exit node" to the regular Internet? I don't want it to be. (link)

No. Unlike Tor, "exit nodes" or "outproxies" are not an inherent part of the network. Only volunteers who set up and run separate applications will relay traffic to the regular Internet. There are very very few of these.

I can't access regular Internet sites through I2P. (link)

See above. There are very few HTTP "outproxies", they are not an inherent part of the network, and they may not be up. In addition, the old outproxies squid.i2p, true.i2p, and krabs.i2p have vanished. The only outproxy at the moment is false.i2p. To use it, edit your i2ptunnel settings for eepProxy and set your outproxy list to 'false.i2p' (only). Then stop and restart the eepProxy. If it doesn't work, the outproxy is not up. It is not I2P's fault. If your primary reason to use an anonymous network is to anonymously access sites on the regular Internet, you should probably try Tor.

I can't access https:// or ftp:// sites through I2P. (link)

Within I2P, there is no need for HTTPS, as all traffic is encrypted end-to-end. FTP is not supported for technical reasons.

For HTTPS or FTP access to the regular Internet, there are no HTTPS or FTP "outproxies". HTTPS is possible if somebody would like to set one up. FTP is probably not. Actually, just about any other sort of outproxy might work, try setting it up with a standard tunnel and see. As explained several times above, outproxies of any type are not a core part of the network, they are services run by individuals and they may or may not be operational at any given time. If you would like to set up some type of outproxy, carefully research the potential risks. The I2P community may or may not be able to help with the technical aspects, feel free to ask.

Update: Thanks to h2ik and mer'd, they provide service to demonstrate i2p's capability to support https outproxy. the client side setup is not hard at all, if you follow the instruction strictly ;) :

  1. Open i2p tunnel manager. Scroll down to the bottom.
  2. Choose CONNECT from New Client Tunnel dropdown list, click Create
  3. In the new page, name and describe your new https tunnel as you like. The Access Point is your local port for the new https proxy recommended port's 4445. Outproxy should be the outproxy's .i2p address which support https. In this case mer.d and h2ik(see the link for address). Make sure Shared Client, Delay Connect, AutoStart are checked. Other option as default, Click Save. In tunnel manger, click the Start button next to your new tunnel.
  4. In firefox, click through Tools>Options>Advanced>Network>Setting. Untick Use this proxy for all protocol, set SSL proxy: to localhost:4445.
  5. Done. If you think their service is valuable, you can thank them in their post. If the service is down, you can ask them nicely in their post too. See the link in step 3. If you are a tor operator and you think you can help, you can ask in irc for assistance.

Is using an outproxy safe? (link)

You have to decide for yourself. It depends on what you are doing, your threat model, and how much you trust the outproxy operator.

Like Tor, I2P does not magically encrypt the Internet. You are vulnerable to snooping by the outproxy operator. The Tor FAQ does a good job of explaining this. There is no HTTPS outproxy in I2P, and you cannot hide your traffic from an HTTP outproxy operator.

In addition, you may be vulnerable to collusion between the outproxy operator and operators of other I2P services, if you use the same tunnels ("shared clients"). There is additional discussion about this on zzz.i2p.

How do I access IRC, BitTorrent, or other services on the regular Internet? (link)

You can't. Somebody must set up an outproxy for each service. There are only two types of outproxies running right now: HTTP and email. There is no SOCKS outproxy. If you need this you should probably try Tor.

Most of the eepsites within I2P are down? (link)

If you consider every eepsite that has ever been created, yes, most of them are down. People and eepsites come and go. A good way to get started in I2P is check out a list of eepsites that are currently up. inproxy.tino.i2p and perv.i2p track active eepsites.

How do I set up my own eepsite? (link)

Click on the My Eepsite Link on the top of your router console for instructions.

Why is I2P so slow? (link)

Why are downloads, torrents, web browsing, and everything else so slow on I2P? The encryption and routing within the I2P network adds a substantial amount of overhead and limits bandwidth. Anonymity isn't free.

In addition, you and everybody else probably need to increase your bandwidth limits. Two key settings are the inbound and outbound bandwidth limiters on the configuration page. With the default settings of 32KBps you will generally get no better than 15KBps data transfer in I2PSnark. Increasing the settings (but keeping within your actual connection limitations) will increase the potential transfer rate for I2PSnark and all other applications.

Also, do you have sufficient share bandwidth configured to allow participating tunnels to route through your router? Believe it or not, allowing participating traffic keeps you well-integrated in the network and helps your own transfer speeds.

I2P is a work in progress. Lots of improvements and fixes are being implemented, and generally speaking, running the latest release will help your performance. If you haven't, install the latest release.

Bittorrent / I2PSnark / Azureus I2P Plugin Questions? (link)

See the I2P Bittorrent FAQ (outside I2P)

How do I connect to IRC within I2P? (link)

On the I2PTunnel configuration page, start the ircProxy. Then tell your IRC client to connect to localhost port 6668.

How can I access the web console from my other machines or password protect it? (link)

For security purposes, the router's admin console by default only listens for connections on the local interface. However, with a little hacking, you can make it reachable remotely:

  1. Open up clients.config and replace
    clientApp.0.args=7657 ::1,127.0.0.1 ./webapps/
    with
    clientApp.0.args=7657 0.0.0.0 ./webapps/
  2. Go to http://localhost:7657/configadvanced.jsp and add a new option: consolePassword=foo (or whatever password you want)
  3. Go to http://localhost:7657/index.jsp and hit "Graceful restart", which restarts the JVM and reloads the client applications

After that fires up, you should now be able to reach your console remotely. You will be prompted for a username and password though - the username is "admin" and the password is whatever you specified in step 2 above. Note: the 0.0.0.0 above specifies an interface, not a network or netmask. 0.0.0.0 means "bind to all interfaces", so it can be reachable on 127.0.0.1:7657 as well as any LAN/WAN IP.

How can I use applications from my other machines? (link)

By default, the router I2CP interface (port 7654) binds to address 127.0.0.1. To bind to 0.0.0.0, set the router advanced configuration option i2cp.tcp.bindAllInterfaces=true and restart.

Whats an "eepsite"? (link)

An eepsite is a website that is hosted anonymously - you can access it by setting your web browser's HTTP proxy to use the web proxy (typically it listens on localhost port 4444), and browsing to the site.

What do the Active x/y numbers mean in the router console? (link)

x is the number of peers you've sent or received a message from successfully in the last minute, y is the number of peers seen in the last hour or so.

Is it possible to use I2P as a SOCKS proxy? (link)

The SOCKS proxy is working as of release 0.7.1. SOCKS 4/4a/5 are supported. There is no SOCKS outproxy so it is of limited use.

In addition, many applications leak sensitive information that could identify you on the Internet. I2P only filters connection data, but if the program you intend to run sends this information as content, I2P has no way to protect your anonymity. For example, some mail applications will send the IP address of the machine they are running on to a mail server. There is no way for I2P to filter this, thus using I2P to 'socksify' existing applications is possible, but extremely dangerous.

If you would like more information on the socks proxy application anyway, there are some helpful hints on the socks page.

What ports does I2P use? (link)

Okay, here's a rundown of the default ports (everything is configurable through various settings, of course):

The local I2P ports and the I2PTunnel ports do not need to be reachable from remote machines, but *should* be reachable locally. You can also create additional ports for I2PTunnel instances via http://localhost:7657/i2ptunnel/ (and in turn, would need to get your firewall to allow you local access, but not remote access, unless desired).

So, to summarize, nothing needs to be reachable by unsolicited remote peers, but if you can configure your NAT/firewall to allow inbound UDP and TCP to port 8887, you'll get better performance. You will also need to be able to send outbound UDP packets to arbitrary remote peers (blocking IPs randomly with something like PeerGuardian only hurts you - don't do it).

How do I reseed manually? (link)

An I2P router only needs to reseed once, to join the network for the first time. Reseeding is nothing more than sending plain HTTP GET requests to fetch a directory listing and download multiple "routerInfo" files from a predefined reseed URL.

A typical symptom of a failed reseed is the "Known" indicator (on the left sidebar of the router console) displaying a very small value (often less than 5) which does not increase. This can occur, among other things, if your firewall limits outbound traffic, and blocked the reseed request.

To reseed an I2P router manually, do the following:


I have a question! (link)

Great! Find us on IRC irc.freenode.net #i2p or post to the forum and we'll post it here (with the answer, hopefully).

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