I have a decentralized web application that is hosted in the cloud. I recently deployed a smart contract to two different test networks Ropsten and Goerli - my contract deployed to the Ropsten network is using infura as the host so the provider is https://ropsten.infura.io/v3/{project-id}. my web application is able to access the contract because it's hosted by infura However when I deployed the same contract to Goerli - I set up a local geth node and connected accounts that I created with clef. I deployed the same contract from localhost:8545 (the default geth port) I can interact with my contract locally when I run my application from localhost:3099.

However when users access the application via the web, How do I connect my web application to my locally hosted geth node? When I run my application locally (from a different port) current code below

if (process.env.NETWORK === 'goerli') { 
    host = process.env.HOST;
    port = process.env.GOERLIPORT;
    web3address = host + port; // http://localhost:8545
var web3 = new Web3(web3address);

Would I have to point my live web application to my public ip instead of localhost:8545? If I'm running my geth node locally?

Are there any tutorials or information on deploying smart contracts from a local geth node and have a web application that lives in the cloud interact with the contract that is hosted on such local node - As always any information is appreciated

1 Answer 1


How do I connect my web application to my locally hosted geth node?

You don't. You need to provide a public Ethereum node to your users yourself or with a service like Infura.

Here is a service provider list:


  • Hi Mikko - thanks for taking the time to answer the question - I guess a follow up question would be, if you had a machine dedicated to running a full node - how would one make it public? In theory couldn't you deploy from that and just use your point application to your public IP? Could this be done securely?
    – James Daly
    Dec 31, 2020 at 20:26
  • Was reading more about it here ethereum.stackexchange.com/a/10682/60337 How does one make an ethereum node public?
    – James Daly
    Dec 31, 2020 at 20:45

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