Some notes on Networking

Posted on October 17, 2025 by Riccardo
Networking
  • ipconfig getifaddr en0 -> 192.168.55.106
  • bin/rails server -b 0.0.0.0 -p 3000 -> Visit http://192.168.55.106:3000/
  • lsof -i :3000 -> localhost:hbci vs lsof -i :3000 -nP -> 127.0.0.1:3000
  • localhost:3000 tries both IPv6 ([::1]:3000) and IPv4 (127.0.0.1:3000), look at /etc/hosts/

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