Builder's Guide
  • Welcome to the Builder's Guide to the LND Galaxy!
  • The Lightning Network
    • Overview
    • Payment Channels
      • Lifecycle of a Payment Channel
      • Watchtowers
      • Understanding Sweeping
      • Etymology
    • The Gossip Network
      • Identifying Good Peers on the Lightning Network
    • Pathfinding
      • Finding routes in the Lightning Network
      • Channel Fees
      • Multipath Payments (MPP)
    • Lightning Network Invoices
      • Understanding Lightning Invoices
    • Making Payments
      • The Payment Cycle
      • Timelocks
      • ⭐Hashed Timelock Contract (HTLC)
      • Payment Etymology
      • ⭐What Makes a Good Routing Node
      • Understanding Submarine Swaps
      • Instant Submarine Swaps
    • Liquidity
      • ⭐Understanding Liquidity
      • Managing Liquidity on the Lightning Network
      • Liquidity Management for Lightning Merchants
      • How to Get Inbound Capacity on the Lightning Network
      • Lightning Service Provider
    • L402: Lightning HTTP 402 Protocol
      • Macaroons
      • L402
      • 📋Protocol Specification
      • Implementations and Links
    • Taproot Assets
      • Taproot Assets Protocol
      • Taproot Assets on Lightning
      • Edge Nodes
      • Taproot Assets Trustless Swap
      • FAQ
      • Glossary
  • Lightning Network Tools
    • LND
      • 🛠️Get Started
      • lnd.conf
      • First Steps With LND
      • Wallet Management
      • Sending Payments
      • Atomic Multi-path Payments (AMP)
      • Receiving Payments
      • Unconfirmed Bitcoin Transactions
      • Channel Fees
      • Inbound Channel Fees
      • Macaroons
      • Configuring Watchtowers
      • Pathfinding
      • Blinded Paths
      • Key Import
      • Secure Your Lightning Network Node
      • Configuration of a Routing Node
      • Quick Tor Setup
      • Configuring Tor
      • Enable ‘Neutrino mode’ in Bitcoin Core
      • Send Messages With Keysend
      • Partially Signed Bitcoin Transactions
      • Bulk onchain actions with PSBTs
      • Sweeper
      • Debugging LND
      • Fuzzing LND
      • LND API documentation
      • Channel Acceptor
      • RPC Middleware Interceptor
      • HTLC Interceptor
      • NAT Traversal
      • Recovery: Planning for Failure
      • Migrating LND
      • Disaster recovery
      • Contribute to LND
    • Lightning Terminal
      • What is Lightning Terminal?
      • 🛠️Get litd
      • Run litd
      • Integrating litd
      • Demo: Litd Speed Run
      • Connect to Terminal
      • Recommended Channels
      • Rankings
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      • Liquidity Report
      • Opening Lightning Network Channels
      • Managing Channel Liquidity
      • Autofees
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      • LND Accounts
      • Loop and Lightning Terminal
      • Loop Fees
      • Pool and Lightning Terminal
      • Command Line Interface
      • Troubleshooting
      • Lightning Node Connect: Under the hood
      • LNC Node Package
      • LITD API Documentation
      • Privacy and Security
      • Privacy Policy
      • Terms of Use
    • Loop
      • 🛠️Get Started
      • The Loop CLI
      • Autoloop
      • Static Loop In Addresses
      • Instant Loop Outs
      • Peer with Loop
      • Loop API Documentation
    • Pool
      • Overview
      • Quickstart
      • 🛠️Installation
      • First Steps
      • Accounts
      • Orders and Asks
      • Sidecar Channels
      • Zero-confirmation Channels
      • Channel Leases
      • Batch Execution
      • Account Recovery
      • Pool API Documentation
      • FAQs
    • Taproot Assets
      • Get Started
      • First Steps
      • Taproot Assets Channels
      • Asset Decimal Display
      • Become an Edge Node
      • RFQ
      • Collectibles
      • Universes
      • Asset Loop
      • Debugging Tapd
      • Multisignature
      • Minting Assets With an External Signer
      • Lightning Polar
      • Operational Safety Guidelines
      • Taproot Assets API Documentation
    • Aperture
      • ⚒️Get Aperture
      • LNC Backend
      • LNC Mailbox
      • Pricing
    • Faraday
      • 🛠️Get Started
      • The Faraday CLI
      • Faraday API Documentation
  • LAPPs
    • Guides
      • Use Polar to Build Your First LAPP
        • Setup: Local Cluster with Polar
        • Setup: Run the Completed App
        • Setup: Run the App Without LND
      • Add Features
        • Feature 1: Connect to LND
        • Feature 2: Display Node Alias and Balance
        • Feature 3: Sign and Verify Posts
        • Feature 4: Modify Upvote Action
      • Make Your own LNC-powered Application
    • Next Steps
  • Community Resources
    • Resource List
    • Lightning Bulb 💡
    • Glossary
    • FAQ
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  1. Lightning Network Tools
  2. LND

NAT Traversal

lnd has support for NAT traversal using a number of different techniques. At the time of writing this documentation, UPnP and NAT-PMP are supported. NAT traversal can be enabled through lnd's --nat flag.

⛰  lnd ... --nat

On startup, lnd will try the different techniques until one is found that's supported by your hardware. The underlying dependencies used for these techniques rely on using system-specific binaries in order to detect your gateway device's address. This is needed because we need to be able to reach the gateway device to determine if it supports the specific NAT traversal technique currently being tried. Because of this, due to uncommon setups, it is possible that these binaries are not found in your system. If this is case, lnd will exit stating such error.

As a bonus, lnd spawns a background thread that automatically detects IP address changes and propagates the new address update to the rest of the network. This is especially beneficial for users who were provided dynamic IP addresses from their internet service provider.

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Last updated 24 days ago

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