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Merge pull request #6174

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9cb8d92 ANONYMITY_NETWORKS.md : fix unintentional wrapping (jonathancross)
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luigi1111 2019-11-25 12:40:05 -06:00
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ANONYMITY_NETWORKS.md
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@ -46,8 +46,10 @@ Connecting to an anonymous address requires the command line option
`--tx-proxy` which tells `monerod` the ip/port of a socks proxy provided by a `--tx-proxy` which tells `monerod` the ip/port of a socks proxy provided by a
separate process. On most systems the configuration will look like: separate process. On most systems the configuration will look like:
> `--tx-proxy tor,127.0.0.1:9050,10` ```
> `--tx-proxy i2p,127.0.0.1:9000` --tx-proxy tor,127.0.0.1:9050,10
--tx-proxy i2p,127.0.0.1:9000
```
which tells `monerod` that ".onion" p2p addresses can be forwarded to a socks which tells `monerod` that ".onion" p2p addresses can be forwarded to a socks
proxy at IP 127.0.0.1 port 9050 with a max of 10 outgoing connections and proxy at IP 127.0.0.1 port 9050 with a max of 10 outgoing connections and
@ -55,12 +57,14 @@ proxy at IP 127.0.0.1 port 9050 with a max of 10 outgoing connections and
9000 with the default max outgoing connections. Since there are no seed nodes 9000 with the default max outgoing connections. Since there are no seed nodes
for anonymity connections, peers must be manually specified: for anonymity connections, peers must be manually specified:
> `--add-exclusive-node rveahdfho7wo4b2m.onion:28083` ```
> `--add-peer rveahdfho7wo4b2m.onion:28083` --add-exclusive-node rveahdfho7wo4b2m.onion:28083
--add-peer rveahdfho7wo4b2m.onion:28083
```
Either option can be listed multiple times, and can specify any mix of Tor, Either option can be listed multiple times, and can specify any mix of Tor,
I2P, and IPv4 addresses. Using `--add-exclusive-node` will prevent the usage of I2P, and IPv4 addresses. Using `--add-exclusive-node` will prevent the usage of
seed nodes on ALL networks, which will typically be undesireable. seed nodes on ALL networks, which will typically be undesirable.
### Inbound Connections ### Inbound Connections
@ -68,8 +72,10 @@ Receiving anonymity connections is done through the option
`--anonymous-inbound`. This option tells `monerod` the inbound address, network `--anonymous-inbound`. This option tells `monerod` the inbound address, network
type, and max connections: type, and max connections:
> `--anonymous-inbound rveahdfho7wo4b2m.onion:28083,127.0.0.1:28083,25` ```
> `--anonymous-inbound cmeua5767mz2q5jsaelk2rxhf67agrwuetaso5dzbenyzwlbkg2q.b32.i2p:5000,127.0.0.1:30000` --anonymous-inbound rveahdfho7wo4b2m.onion:28083,127.0.0.1:28083,25
--anonymous-inbound cmeua5767mz2q5jsaelk2rxhf67agrwuetaso5dzbenyzwlbkg2q.b32.i2p:5000,127.0.0.1:30000
```
which tells `monerod` that a max of 25 inbound Tor connections are being which tells `monerod` that a max of 25 inbound Tor connections are being
received at address "rveahdfho7wo4b2m.onion:28083" and forwarded to `monerod` received at address "rveahdfho7wo4b2m.onion:28083" and forwarded to `monerod`
@ -87,12 +93,16 @@ P2P anonymity connections. The anonymity network (Tor/i2p) is
[configured in the same manner](#configuration), except the localhost port [configured in the same manner](#configuration), except the localhost port
must be the RPC port (typically 18081 for mainnet) instead of the p2p port: must be the RPC port (typically 18081 for mainnet) instead of the p2p port:
> HiddenServiceDir /var/lib/tor/data/monero ```
> HiddenServicePort 18081 127.0.0.1:18081 HiddenServiceDir /var/lib/tor/data/monero
HiddenServicePort 18081 127.0.0.1:18081
```
Then the wallet will be configured to use a Tor/i2p address: Then the wallet will be configured to use a Tor/i2p address:
> `--proxy 127.0.0.1:9050` ```
> `--daemon-address rveahdfho7wo4b2m.onion` --proxy 127.0.0.1:9050
--daemon-address rveahdfho7wo4b2m.onion
```
The proxy must match the address type - a Tor proxy will not work properly with The proxy must match the address type - a Tor proxy will not work properly with
i2p addresses, etc. i2p addresses, etc.
@ -125,8 +135,10 @@ can distribute the address to its other peers.
Tor must be configured for hidden services. An example configuration ("torrc") Tor must be configured for hidden services. An example configuration ("torrc")
might look like: might look like:
> HiddenServiceDir /var/lib/tor/data/monero ```
> HiddenServicePort 28083 127.0.0.1:28083 HiddenServiceDir /var/lib/tor/data/monero
HiddenServicePort 28083 127.0.0.1:28083
```
This will store key information in `/var/lib/tor/data/monero` and will forward This will store key information in `/var/lib/tor/data/monero` and will forward
"Tor port" 28083 to port 28083 of ip 127.0.0.1. The file "Tor port" 28083 to port 28083 of ip 127.0.0.1. The file
@ -170,7 +182,7 @@ be used by an ISP to link a user to a transaction.
Run `monerod` as often as possible to conceal when transactions are being sent. Run `monerod` as often as possible to conceal when transactions are being sent.
Future versions will also have peers that first receive a transaction over an Future versions will also have peers that first receive a transaction over an
anonymity network delay the broadcast to public peers by a randomized amount. anonymity network delay the broadcast to public peers by a randomized amount.
This will not completetely mitigate a user who syncs up sends then quits, in This will not completely mitigate a user who syncs up sends then quits, in
part because this rule is not enforceable, so this mitigation strategy is part because this rule is not enforceable, so this mitigation strategy is
simply a best effort attempt. simply a best effort attempt.
@ -183,9 +195,9 @@ the connections are not circuit based.
#### Mitigation #### Mitigation
The best mitigiation is to use I2P instead of Tor. However, I2P The best mitigation is to use I2P instead of Tor. However, I2P
has a smaller set of users (less cover traffic) and academic reviews, so there has a smaller set of users (less cover traffic) and academic reviews, so there
is a tradeoff in potential isses. Also, anyone attempting this strategy really is a trade off in potential issues. Also, anyone attempting this strategy really
wants to uncover a user, it seems unlikely that this would be performed against wants to uncover a user, it seems unlikely that this would be performed against
every Tor/I2P user. every Tor/I2P user.
@ -213,7 +225,7 @@ key identity.
@secparam (twitter) recommended changing circuits (Tor) as an additional @secparam (twitter) recommended changing circuits (Tor) as an additional
precaution. This is likely not a good idea - forcibly requesting Tor to change precaution. This is likely not a good idea - forcibly requesting Tor to change
circuits is observable by the ISP. Instead, `monerod` should likely disconnect circuits is observable by the ISP. Instead, `monerod` should likely disconnect
from peers ocassionally. Tor will rotate circuits every ~10 minutes, so from peers occasionally. Tor will rotate circuits every ~10 minutes, so
establishing new connections will use a new public key identity and make it establishing new connections will use a new public key identity and make it
more difficult for the hidden service to link information. This process will more difficult for the hidden service to link information. This process will
have to be done carefully because closing/reconnecting connections can also have to be done carefully because closing/reconnecting connections can also