Ethereum: Running a Bitcoin node (behind Firewall / NAT or anything else? disallowing inbound connections)

Execution of a bitcoin node on a Raspberry Pi: a guide

As a Bitcoin enthusiast, you are probably interested in exploring other means of validating transactions and participating in the decentralized network. An option is to run a complete bitcoin node behind a firewall or NAT. In this article, we will cover how to configure a bitcoin node on a Raspberry Pi 3, including the configuration of incoming connections.

Why execute a knot behind the firewall / Nat?

Execute a bitcoin node behind a firewall or Nat can offer several advantages:

* Increased safety : By limiting the number of external connections authorized to your node, you reduce the potential for attacks and exploits.

* Reduction of network congestion : if several nodes are connected to the same Internet connection, this can lead to increased latency and network congestion. Executing a knot behind a firewall or Nat helps isolate it from another traffic.

* Improved safety : By restricting access to your node, you reduce the risk of unauthorized access to your private keys or portfolio data.

Configuration of a Bitcoin node on Raspberry Pi 3

To start, you will need:

• A Raspberry Pi 3 (all version will work)

• The Raspbian operating system

• An office computer with Internet access (for update and tests)

Here’s how to configure a complete bitcoin node on your Raspberry Pi 3:

Step 1: Install the required software

First, install the necessary software packages:

`bash

Update Sudo Apt-Get

Sudo Apt-Get Install -Y Bitcoin-Core

'

Step 2: Configure the Bitcoin knot

Change the directory / etc / bitcointo configure your node:

bash

sudo nano /etc/bitcoin/bitcoin.conf

'

In the Bitcoin.Conf file, add the following lines to allow incoming connections:

`Ini

[knots]

Authorize Labound = True

'

Step 3: Create a new user and wallet

Create a new user and wallet for your node:

bash

Sudo Apt -Get Installer -Y Seahorse

Seahorse Createuser - Password bitcoinode

Seahorse generateprivkey - Bitcoinode.

'

Replace by the desired username.

Step 4: Configure the rules of the firewall

To allow incoming connections, you will have to configure the rules of the firewall:

`bash

sudo nano / etc / hosts-allow

'

In this file, add the following lines:

Ini

Localhost: 2222 bitcoinnode

'

Save and close the file.

Step 5: Node starter service

Start the node service:

bash

Sudo Systemctl Start Bitcoin-Core

'

Check that the node is running by checking its IP address:

bash

Dig + short bitcoinod

` ‘

You should now be able to access your Bitcoin node behind a firewall or NAT. Make sure you carefully test your configuration before deploying it in production.

Additional considerations

* Safety : Make sure you use solid passwords and activate two-factor authentication (2FA) for more security.

* Surveillance : regularly monitor the performance of your knot and quickly respond to all the problems that arise.

* Backup : Make sure you regularly save your node data in the event of a disaster or loss.

By following these steps, you can configure a complete bitcoin node on your Raspberry Pi 3 behind a firewall or a NAT. Do not forget to always prioritize safety and monitor the performance of your node for optimal results.