Builder's Guide
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Welcome to the Builder's Guide to the LND Galaxy!
The Lightning Network
Overview
Channels
Payments
Liquidity
Routing
LSAT
Taro
Lightning Network Tools
LND
🛠
Get Started
lnd.conf
Wallet Management
Sending Payments
Atomic Multi-path Payments (AMP)
Receiving Payments
Partially Signed Bitcoin Transactions
Unconfirmed Bitcoin Transactions
Channel Fees
Macaroons
Configuring Watchtowers
Key Import
Secure Your Lightning Network Node
Operational Safety
Optimal Configuration of a Routing Node
Quick Tor Setup
Configuring Tor
Enable ‘Neutrino mode’ in Bitcoin Core
Send messages with keysend
Debugging LND
Fuzzing LND
LND and etcd
gRPC API
Clustering
NAT Traversal
Recovery: Planning for failure
Migrating LND
Disaster recovery
Lightning Terminal
Loop
Pool
Faraday
LAPPs
Guides
Next Steps
Community Resources
Resource List
Lightning Bulb 💡
Glossary
FAQ
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Enable ‘Neutrino mode’ in Bitcoin Core
Prepare one or multiple existing Bitcoin Core nodes to work with LND's Neutrino mode.
With the inclusion of BIP157, starting from Bitcoin Core 0.21.0, we are able to enable our Bitcoin node to serve block data to remote LND nodes.
This can be useful if we are already running a fully synced Bitcoin node somewhere and want to use it for one or multiple remote instances of LND. If we have the additional bandwidth and storage available, we might also want to make our existing Bitcoin node available to the public as a free service.
Easily available public Neutrino instances help the network grow more robust and remove bottlenecks. Such services are a prerequisite to light clients, which do not have a copy of the Bitcoin Blockchain available locally.

Amend your bitcoin.conf

In your bitcoin.conf file, add the following paramenters:
blockfilterindex=1 peerblockfilters=1
Once you restart your node, it will resync the Blockchain and build the blockfilterindex. This may take a while depending on your node’s available memory and computing power.
As soon as Bitcoin Core is running, it will now advertise itself to the network if you have set this in your configuration. To disable discovery, you may set discover=0 in your bitcoin.conf.

Connect from your LND

When starting lnd with neutrino, you will need to set the following settings in your lnd.conf, or use the corresponding flags at startup:
bitcoin.node=neutrino neutrino.connect=<your Bitcoin node> You may also use multiple options of neutrino.addpeer= instead of neutrino.connect= if you do not want to limit yourself to only connecting to a single neutrino node.
bitcoin.node=neutrino neutrino.addpeer=<your Bitcoin node> neutrino.addpeer=faucet.lightning.community
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Amend your bitcoin.conf
Connect from your LND