from diva.exchange
# Project: I2Pd package for Tails
Related: https://gitlab.tails.boum.org/tails/tails/-/issues/12264#note_150424
Target: having an up-to-date I2Pd package (a deb) for tails available from a suitable repo.
The problems:
* Tails is debian based (which is great) - but as of today - the I2P package is rather outdated.
* Tails is heavily relying on iptables to control and secure the network of the system. This approach is fine from a tails perspective. I2P should therefore simply run in a sandbox with clearly defined interfaces to the host. The I2P sandbox itself needs full network access (tcp/udp). In the I2P jargon this is called NTCP and SSU.
As a **prototype** this approach is working (tested on tails 4.7):
Execute as root:
```
apt-get install i2pd
systemctl stop i2pd
```
THEN:
1. fix the systemd i2pd.service file, see below
2. fix /etc/i2pd/i2pd.conf, see below
3. empty /etc/i2pd/tunnels.conf (currently not needed for the prototype)
Execute as root:
```
iptables -I OUTPUT 3 -p tcp -d 127.0.0.1 -j ACCEPT -m tcp --tcp-flags SYN,ACK,FIN,RST SYN -m multiport --destination-ports 4444,4447,7070 -m owner --uid-owner amnesia
iptables -I OUTPUT 4 -p tcp -j ACCEPT -m owner --uid-owner i2pd
iptables -I OUTPUT 5 -p udp -j ACCEPT -m owner --uid-owner i2pd
systemctl start i2pd
```
Go get a tea and wait for a few minutes until I2Pd has integrated into the I2P network.
Test as user amnesia:
```
curl -x localhost:4444 http://diva.i2p > diva.i2p.html
more diva.i2p.html
```
## systemd i2pd.service file
```
[Unit]
Description=I2P Router written in C++
Documentation=man:i2pd(1) https://i2pd.readthedocs.io/en/latest/
After=network.target
[Service]
User=i2pd
Group=i2pd
RuntimeDirectory=i2pd
RuntimeDirectoryMode=0700
LogsDirectory=i2pd
LogsDirectoryMode=0700
Type=forking
ExecStart=/usr/sbin/i2pd --conf=/etc/i2pd/i2pd.conf --pidfile=/run/i2pd/i2pd.pid --logfile=/var/log/i2pd/i2pd.log --daemon --service
ExecReload=/bin/kill -HUP $MAINPID
PIDFile=/run/i2pd/i2pd.pid
### Uncomment, if auto restart needed
#Restart=on-failure
KillSignal=SIGQUIT
# If you have the patience waiting 10 min on restarting/stopping it, uncomment this.
# i2pd stops accepting new tunnels and waits ~10 min while old ones do not die.
#KillSignal=SIGINT
#TimeoutStopSec=10m
# If you have problems with hanging i2pd, you can try increase this
LimitNOFILE=4096
# To enable write of coredump uncomment this
#LimitCORE=infinity
PrivateDevices=yes
[Install]
WantedBy=multi-user.target
```
## /etc/i2pd/i2pd.conf file
```
## Configuration file for a typical i2pd user
## See https://i2pd.readthedocs.io/en/latest/user-guide/configuration/
## for more options you can use in this file.
## Lines that begin with "## " try to explain what's going on. Lines
## that begin with just "#" are disabled commands: you can enable them
## by removing the "#" symbol.
## Tunnels config file
## Default: ~/.i2pd/tunnels.conf or /var/lib/i2pd/tunnels.conf
# tunconf = /var/lib/i2pd/tunnels.conf
## Tunnels config files path
## Use that path to store separated tunnels in different config files.
## Default: ~/.i2pd/tunnels.d or /var/lib/i2pd/tunnels.d
# tunnelsdir = /var/lib/i2pd/tunnels.conf.d
## Where to write pidfile (don't write by default)
# pidfile = /var/run/i2pd.pid
## Logging configuration section
## By default logs go to stdout with level 'info' and higher
##
## Logs destination (valid values: stdout, file, syslog)
## * stdout - print log entries to stdout
## * file - log entries to a file
## * syslog - use syslog, see man 3 syslog
# log = file
## Path to logfile (default - autodetect)
# logfile = /var/log/i2pd.log
## Log messages above this level (debug, *info, warn, error, none)
## If you set it to none, logging will be disabled
loglevel = debug
## Write full CLF-formatted date and time to log (default: write only time)
# logclftime = true
## Daemon mode. Router will go to background after start
# daemon = true
## Specify a family, router belongs to (default - none)
# family =
## External IP address to listen for connections
## By default i2pd sets IP automatically
# host = 1.2.3.4
## Port to listen for connections
## By default i2pd picks random port. You MUST pick a random number too,
## don't just uncomment this
# port = 4567
## Enable communication through ipv4
ipv4 = true
## Enable communication through ipv6
ipv6 = false
## Network interface to bind to
# ifname =
## You can specify different interfaces for IPv4 and IPv6
# ifname4 =
# ifname6 =
## Enable NTCP transport (default = true)
ntcp = true
## If you run i2pd behind a proxy server, you can only use NTCP transport with ntcpproxy option
## Should be http://address:port or socks://address:port
# ntcpproxy = socks://localhost:9050
## Enable SSU transport (default = true)
ssu = true
## Should we assume we are behind NAT? (false only in MeshNet)
# nat = true
## Bandwidth configuration
## L limit bandwidth to 32KBs/sec, O - to 256KBs/sec, P - to 2048KBs/sec,
## X - unlimited
## Default is X for floodfill, L for regular node
bandwidth = P
## Max % of bandwidth limit for transit. 0-100. 100 by default
share = 50
## Router will not accept transit tunnels, disabling transit traffic completely
## (default = false)
# notransit = true
## Router will be floodfill
# floodfill = true
[http]
## Web Console settings
## Uncomment and set to 'false' to disable Web Console
# enabled = true
## Address and port service will listen on
address = 127.0.0.1
port = 7070
## Path to web console, default "/"
# webroot = /
## Uncomment following lines to enable Web Console authentication
# auth = true
# user = i2pd
# pass = changeme
[httpproxy]
## Uncomment and set to 'false' to disable HTTP Proxy
# enabled = true
## Address and port service will listen on
address = 127.0.0.1
port = 4444
## Optional keys file for proxy local destination
# keys = http-proxy-keys.dat
## Enable address helper for adding .i2p domains with "jump URLs" (default: true)
# addresshelper = true
## Address of a proxy server inside I2P, which is used to visit regular Internet
# outproxy = http://false.i2p
## httpproxy section also accepts I2CP parameters, like "inbound.length" etc.
[socksproxy]
## Uncomment and set to 'false' to disable SOCKS Proxy
# enabled = true
## Address and port service will listen on
address = 127.0.0.1
port = 4447
## Optional keys file for proxy local destination
# keys = socks-proxy-keys.dat
## Socks outproxy. Example below is set to use Tor for all connections except i2p
## Uncomment and set to 'true' to enable using of SOCKS outproxy
# outproxy.enabled = false
## Address and port of outproxy
# outproxy = 127.0.0.1
# outproxyport = 9050
## socksproxy section also accepts I2CP parameters, like "inbound.length" etc.
[sam]
## Uncomment and set to 'true' to enable SAM Bridge
enabled = false
## Address and port service will listen on
# address = 127.0.0.1
# port = 7656
[bob]
## Uncomment and set to 'true' to enable BOB command channel
enabled = false
## Address and port service will listen on
# address = 127.0.0.1
# port = 2827
[i2cp]
## Uncomment and set to 'true' to enable I2CP protocol
enabled = false
## Address and port service will listen on
# address = 127.0.0.1
# port = 7654
[i2pcontrol]
## Uncomment and set to 'true' to enable I2PControl protocol
enabled = false
## Address and port service will listen on
# address = 127.0.0.1
# port = 7650
## Authentication password. "itoopie" by default
# password = itoopie
[precomputation]
## Enable or disable elgamal precomputation table
## By default, enabled on i386 hosts
# elgamal = true
[upnp]
## Enable or disable UPnP: automatic port forwarding (enabled by default in WINDOWS, ANDROID)
enabled = false
## Name i2pd appears in UPnP forwardings list (default = I2Pd)
# name = I2Pd
[reseed]
## Options for bootstrapping into I2P network, aka reseeding
## Enable or disable reseed data verification.
verify = false
## URLs to request reseed data from, separated by comma
## Default: "mainline" I2P Network reseeds
# urls = https://reseed.i2p-projekt.de/,https://i2p.mooo.com/netDb/,https://netdb.i2p2.no/
urls = https://reseed.diva.exchange/
## Path to local reseed data file (.su3) for manual reseeding
# file = /path/to/i2pseeds.su3
## or HTTPS URL to reseed from
# file = https://legit-website.com/i2pseeds.su3
## Path to local ZIP file or HTTPS URL to reseed from
# zipfile = /path/to/netDb.zip
## If you run i2pd behind a proxy server, set proxy server for reseeding here
## Should be http://address:port or socks://address:port
proxy = socks://localhost:9050
## Minimum number of known routers, below which i2pd triggers reseeding. 25 by default
# threshold = 25
[addressbook]
## AddressBook subscription URL for initial setup
## Default: inr.i2p at "mainline" I2P Network
# defaulturl = http://joajgazyztfssty4w2on5oaqksz6tqoxbduy553y34mf4byv6gpq.b32.i2p/export/alive-hosts.txt
## Optional subscriptions URLs, separated by comma
# subscriptions = http://inr.i2p/export/alive-hosts.txt,http://stats.i2p/cgi-bin/newhosts.txt,http://rus.i2p/hosts.txt
[limits]
## Maximum active transit sessions (default:2500)
# transittunnels = 2500
## Limit number of open file descriptors (0 - use system limit)
# openfiles = 0
## Maximum size of corefile in Kb (0 - use system limit)
# coresize = 0
## Threshold to start probabalistic backoff with ntcp sessions (0 - use system limit)
# ntcpsoft = 0
## Maximum number of ntcp sessions (0 - use system limit)
# ntcphard = 0
[trust]
## Enable explicit trust options. false by default
# enabled = true
## Make direct I2P connections only to routers in specified Family.
# family = MyFamily
## Make direct I2P connections only to routers specified here. Comma separated list of base64 identities.
# routers =
## Should we hide our router from other routers? false by default
# hidden = true
[exploratory]
## Exploratory tunnels settings with default values
# inbound.length = 2
# inbound.quantity = 3
# outbound.length = 2
# outbound.quantity = 3
[persist]
## Save peer profiles on disk (default: true)
# profiles = true
```
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