Electrs server setup for local network

External question — Bitcoin Stack Exchange Author: BillyT Original post: https://bitcoin.stackexchange.com/questions/121003 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I have a machine (192.168.1.66) on a local network serving Electrs that's syncd to the tip (netstat -ntlp shows that electrs listening on 127.0.0.1:50001). But I have another machine (192.168.1.68) using SparrowWallet/ElectrumWallet that cannot connect to the machine hosting Electrs (e.g ./ElectrumWallet --server 192.168.1.66:50001:t will not connect/ SparrowWallet shows connection refused), what could be the problem? I am also wondering if using electrs as a trezor backend requires encryption or it can be running unencrypted

External answer — Bitcoin Stack Exchange Author: jaonoctus Original post: https://bitcoin.stackexchange.com/a/121007 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. You might need to add this into your Electrum Server config file: electrum_rpc_addr="0.0.0.0:50001"