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joininbox/prepare_remote_node.md
openoms 2d9514023b
change user to 'joinmarket'
2020-03-18 11:01:32 +00:00

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Prepare a remote node to accept the JoinMarket connection

JoinMarket (running in JoinInBox) needs to connect to Bitcoin Core.
A pruned node with the wallet enabled will do and txindex is not required.
This guide shows how to prepare a RaspiBlitz to accept this connection.

LAN connection

In the node terminal - allow remote RPC connections to Bitcoin Core

This can be skipped if you connect through Tor (see below)

  1. Edit the bitcoin.conf:

    $ sudo nano /mnt/hdd/bitcoin/bitcoin.conf

    Change the values (edit to your local subnet):

    #rpcallowip=127.0.0.1
#rpcbind=127.0.0.1:8332
rpcallowip=192.168.1.0/24
rpcbind=0.0.0.0

  2. Restart Bitcoin Core:

    $ sudo systemctl restart bitcoind

  3. The firewall needs to be opened to allow the RPC connection from LAN

    (edit to your local subnet):
    sudo ufw allow from 192.168.1.0/24 to any port 8332
    ufw enable

Tor connection

On the node - activate Tor and create a Hidden Service

Make sure that Tor is ative in the SERVICES menu.

Create a Hidden Service to forward the bitcoin RPC port

  1. Open the Tor configuration file:

    $ sudo nano /etc/tor/torrc

  2. Insert the lines:

    # Hidden Service v3 for bitcoinrpc
HiddenServiceDir /mnt/hdd/tor/bitcoinrpc
HiddenServiceVersion 3
HiddenServicePort 8332 127.0.0.1:8332

  3. Restart Tor:

    $ sudo systemctl restart tor

  4. Take note of the Tor Hidden Service address:

    $ sudo cat /mnt/hdd/tor/bitcoinrpc/hostname

  5. Remember to use torify with the python scripts when connecting remotely through Tor. Example:

    torify wallet-tool.py wallet.jmdat

Resources: