i2pd configuration
i2pd can be configured via either command-line arguments or config files.
Modifying i2pd.conf is just a way of passing command line arguments to i2pd at boot;
for example, running i2pd with argument --port=10123 and setting option port = 10123 in config file will have
the same effect.
There are two separate config files: i2pd.conf and tunnels.conf. i2pd.conf is the main configuration file, where
you configure all options. tunnels.conf is the tunnel configuration file, where you configure I2P hidden services
and client tunnels. the tunnels.conf options are documented here.
i2pd.conf accepts INI-like syntax, such as the following : = .
Comments are "#", not ";" as you might expect. See boost ticket
All command-line parameters are allowed as keys, but for those which contains dot (.), there is a special syntax.
For example:
i2pd.conf:
# comment
log = true # use stdout (default)
ipv6 = true
# settings for specific module
[httpproxy]
port = 4444
# ^^ this will be --httproxy.port= in cmdline
# another comment
[sam]
enabled = true
You are also encouraged to see the commented config with examples of all options in contrib/i2pd.conf.
Options specified on the command line take precedence over those in the config file.
If you are upgrading your very old router (< 2.3.0) see also this page.
Available options
Run ./i2pd --help to show builtin help message (default value of option will be shown in braces)
General options
| Option |
Description |
| conf |
Config file (default: ~/.i2pd/i2pd.conf or /var/lib/i2pd/i2pd.conf). This parameter will be silently ignored if the specified config file does not exist. |
| tunconf |
Tunnels config file (default: ~/.i2pd/tunnels.conf or /var/lib/i2pd/tunnels.conf) |
| pidfile |
Where to write pidfile (default: i2pd.pid, not used in Windows) |
| log |
Logs destination: stdout, file, syslog (stdout if not set or invalid) (if daemon, stdout/unspecified are replaced by file in some cases) |
| logfile |
Path to logfile (default - autodetect) |
| loglevel |
Log messages above this level (debug, info, warn, error, none; default - info) |
| logclftime |
Write full CLF-formatted date and time to log (default: write only time) |
| datadir |
Path to storage of i2pd data (RI, keys, peer profiles, ...) |
| host |
Router external IP for incoming connections |
| port |
Port to listen for incoming connections (default: auto) |
| daemon |
Router will go to background after start |
| service |
Router will use system folders like '/var/lib/i2pd' (on unix) or 'C:\ProgramData\i2pd' (on Windows). Ignored on MacOS and Android |
| ifname |
Network interface to bind to |
| ifname4 |
Network interface to bind to for IPv4 |
| ifname6 |
Network interface to bind to for IPv6 |
| address4 |
Local address to bind to for IPv4 |
| address6 |
Local address to bind to for clearnet IPv6 |
| nat |
If true, assume we are behind NAT. true by default |
| ipv4 |
Enable communication through IPv4. true by default |
| ipv6 |
Enable communication through clearnet IPv6. false by default |
| notransit |
Router will not accept transit tunnels, disabling transit traffic completely. false by default |
| floodfill |
Router will be floodfill. false by default |
| bandwidth |
Bandwidth limit: integer in KBps or letters: L (32), O (256), P (2048), X (>9000) |
| share |
Max % of bandwidth limit for transit. 0-100. 100 by default |
| family |
Name of a family, router belongs to |
| netid |
Network ID, router belongs to. Main I2P is 2. |
| ssu |
Enable SSU transport protocol (use UDP). true by default |
Notes
datadir and service options are only used as arguments for i2pd, these options have no effect when set in i2pd.conf.
NTCP2
| Option |
Description |
| ntcp2.enabled |
Enable NTCP2. Enabled by default |
| ntcp2.published |
Enable incoming NTCP2 connections. Enabled by default |
| ntcp2.port |
Port to listen for incoming NTCP2 connections (default: auto) |
| ntcp2.addressv6 |
External IPv6 for incoming connections |
| ntcp2.proxy |
Specify proxy server for NTCP2. Should be http://address:port or socks://address:port |
SSU2
| Option |
Description |
| ssu2.enabled |
Enable SSU2. Disabled by default on 2.43.0 |
| ssu2.published |
Enable incoming SSU2 connections. Disabled by default on 2.43.0 |
| ssu2.port |
Port to listen for incoming SSU2 connections (default: auto - 'port' from general section or 'port + 1' if SSU is enabled) |
All options below still possible in cmdline, but better write it in config file:
HTTP webconsole
| Option |
Description |
| http.enabled |
If webconsole is enabled. true by default |
| http.address |
The address to listen on (HTTP server) |
| http.port |
The port to listen on (HTTP server) 7070 by default |
| http.auth |
Enable basic HTTP auth for webconsole |
| http.user |
Username for basic auth (default: i2pd) |
| http.pass |
Password for basic auth (default: random, see logs) |
| http.strictheaders |
Enable strict host checking on WebUI. true by default |
| http.hostname |
Expected hostname for WebUI (default: localhost) |
HTTP proxy
| Option |
Description |
| httpproxy.enabled |
If HTTP proxy is enabled. true by default |
| httpproxy.address |
The address to listen on (HTTP Proxy) |
| httpproxy.port |
The port to listen on (HTTP Proxy) 4444 by default |
| httpproxy.addresshelper |
Enable address helper (jump). true by default |
| httpproxy.keys |
Optional keys file for HTTP proxy local destination |
| httpproxy.signaturetype |
Signature type for new keys if keys file is set. 7 by default |
| httpproxy.inbound.length |
Inbound tunnels length if keys is set. 3 by default |
| httpproxy.inbound.quantity |
Inbound tunnels quantity if keys is set. 5 by default |
| httpproxy.inbound.lengthVariance |
Inbound tunnels length variance if keys is set. 0 by default |
| httpproxy.outbound.length |
Outbound tunnels length if keys is set. 3 by default |
| httpproxy.outbound.quantity |
Outbound tunnels quantity if keys is set. 5 by default |
| httpproxy.outbound.lengthVariance |
Outbound tunnels length variance if keys is set. 0 by default |
| httpproxy.outproxy |
HTTP proxy upstream out proxy url (like http://false.i2p) |
| httpproxy.i2cp.leaseSetType |
Type of LeaseSet to be sent. 1, 3 or 5. 1 by default |
| httpproxy.i2cp.leaseSetEncType |
Comma separated encryption types to be used in LeaseSet type 3 or 5 |
Socks proxy
| Option |
Description |
| socksproxy.enabled |
If SOCKS proxy is enabled. true by default |
| socksproxy.address |
The address to listen on (SOCKS Proxy) |
| socksproxy.port |
The port to listen on (SOCKS Proxy). 4447 by default |
| socksproxy.keys |
Optional keys file for SOCKS proxy local destination |
| socksproxy.signaturetype |
Signature type for new keys if keys file is set. 7 by default |
| socksproxy.inbound.length |
Inbound tunnels length if keys is set. 3 by default |
| socksproxy.inbound.quantity |
Inbound tunnels quantity if keys is set. 5 by default |
| socksproxy.inbound.lengthVariance |
Inbound tunnels length variance if keys is set. 0 by default |
| socksproxy.outbound.length |
Outbound tunnels length if keys is set. 3 by default |
| socksproxy.outbound.quantity |
Outbound tunnels quantity if keys is set. 5 by default |
| socksproxy.outbound.lengthVariance |
Outbound tunnels length variance if keys is set. 0 by default |
| socksproxy.outproxy.enabled |
Enable or disable SOCKS outproxy. Disabled by default |
| socksproxy.outproxy |
Address of outproxy. requests outside I2P will go there |
| socksproxy.outproxyport |
Outproxy remote port |
| socksproxy.i2cp.leaseSetType |
Type of LeaseSet to be sent. 1, 3 or 5. 1 by default |
| socksproxy.i2cp.leaseSetEncType |
Comma separated encryption types to be used in LeaseSet type 3 or 5 |
SAM interface
| Option |
Description |
| sam.address |
The address to listen on (SAM bridge) |
| sam.port |
Port of SAM bridge. Usually 7656. SAM is off if not specified |
| sam.enabled |
If SAM is enabled. true by default |
| sam.singlethread |
If false every SAM session runs in own thread. true by default |
BOB interface
| Option |
Description |
| bob.address |
The address to listen on (BOB command channel) |
| bob.port |
Port of BOB command channel. Usually 2827. BOB is off if not specified |
| bob.enabled |
If BOB is enabled. false by default |
I2CP interface
| Option |
Description |
| i2cp.address |
The address to listen on or an abstract address for Android LocalSocket |
| i2cp.port |
Port of I2CP server. Usually 7654. Ignored for Andorid |
| i2cp.enabled |
If I2CP is enabled. false by default. Other services don't require I2CP |
| i2cp.singlethread |
If false every I2CP session runs in own thread. true by default |
I2PControl interface
| Option |
Description |
| i2pcontrol.address |
The address to listen on (I2P control service) |
| i2pcontrol.port |
Port of I2P control service. Usually 7650. I2PControl is off if not specified |
| i2pcontrol.enabled |
If I2P control is enabled. false by default |
| i2pcontrol.password |
I2P control authentication password. itoopie by default |
| i2pcontrol.cert |
I2P control HTTPS certificate file name. i2pcontrol.crt.pem by default |
| i2pcontrol.key |
I2P control HTTPS certificate key file name. i2pcontrol.key.pem by default |
UPNP
| Option |
Description |
| upnp.enabled |
Enable or disable UPnP, false by default for CLI and true for GUI (Windows, Android) |
| upnp.name |
Name i2pd appears in UPnP forwardings list. I2Pd by default |
Cryptography
| Option |
Description |
| precomputation.elgamal |
Use ElGamal precomputated tables. false for x64 and true for other platforms by default |
Reseeding
| Option |
Description |
| reseed.verify |
Verify .su3 signature. false by default |
| reseed.urls |
Reseed URLs, separated by comma |
| reseed.yggurls |
Reseed Yggdrasil's URLs, separated by comma |
| reseed.file |
Path to local .su3 file or HTTPS URL to reseed from |
| reseed.zipfile |
Path to local .zip file to reseed from |
| reseed.threshold |
Minimum number of known routers before requesting reseed. 25 by default |
| reseed.proxy |
Url for https/socks reseed proxy |
Addressbook options
| Option |
Description |
| addressbook.defaulturl |
AddressBook subscription URL. Only used to initialize the AddressBook. |
| addressbook.subscriptions |
AddressBook subscriptions URLs, separated by comma. Note that defaulturl is not added to subscriptions URLs |
| addressbook.hostsfile |
File to dump AddressesBook in hosts.txt format |
Limits
| Option |
Description |
| limits.transittunnels |
Override maximum number of transit tunnels. 2500 by default |
| limits.openfiles |
Limit number of open file descriptors (0 - use system limit) |
Trust options
| Option |
Description |
| trust.enabled |
Enable explicit trust options. false by default |
| trust.family |
Make direct I2P connections only to routers in specified Family. |
| trust.routers |
Make direct I2P connections only to routers specified here. Comma separated list of base64 identities. |
| trust.hidden |
Should we hide our router from other routers? false by default |
Exploratory tunnels
| Option |
Description |
| exploratory.inbound.length |
Exploratory inbound tunnels length. 2 by default |
| exploratory.inbound.quantity |
Exploratory inbound tunnels quantity. 3 by default |
| exploratory.outbound.length |
Exploratory outbound tunnels length. 2 by default |
| exploratory.outbound.quantity |
Exploratory outbound tunnels quantity. 3 by default |
Time sync
| Option |
Description |
| nettime.enabled |
Enable NTP sync. Disabled by default |
| nettime.ntpservers |
Comma-separated list of NTP server. pool.ntp.org by default |
| nettime.ntpsyncinterval |
NTP time sync interval in hours. 72 by default |
Network information persist
| Option |
Description |
| persist.profiles |
Enable peer profile persisting to disk. Enabled by default |
Meshnets transports
| Option |
Description |
| meshnets.yggdrasil |
Support transports through the Yggdrasil |
| meshnets.yggaddress |
Local Yggdrasil's address to publish |
Windows-specific options
| Option |
Description |
| insomnia |
Prevent system from sleeping |
| close |
Action on close: minimize, exit, ask |
UNIX-specific options
| Option |
Description |
| unix.handle_sigtstp |
Handle SIGTSTP and SIGCONT signals. Disabled by default |
handle_sigtstp enables handling of SIGTSTP and SIGCONT signals (since 2.43.0).
SIGTSTP can be called using Ctrl+Z in terminal with running i2pd in it or by kill command. When signal recveived, i2pd will switch to offline mode and stop sending traffic and cleaning of netDb. All active tunnels will be frozen.
To restore network connectivity you need to send SIGCONT signal to the proccess. Tunnels will be cleared if they should expire during the frozen state and new ones will be built.
Local addressbook
There is also a special addressbook config file in the working directory at addressbook/local.csv.
It lets your routers to work as a resolver for 3ld domains if you run that 2ld address on your router and it' presented in addressbook.
Only i2pd can resolve such addresses, by sending special datagram requests.
