On Sunday, August 8th, 2021 at 2:15 AM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > ourdiaspora ourdiaspora@xxxxxxxxxxxxxx writes: > > > psql -d cpacweb -U cpaca > > > > psql: FATAL: Peer authentication failed for user "cpaca" > > It's a gold > > plated certainty that the default packet filter configuration > > wouldn't allow traffic to port 5432 from off-machine. A quick ddg search revealed: sudo ss -tulpn Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port tcp LISTEN 0 128 ::1:5432 :::* users:(("postgres",pid=21794,fd=3)) Is the correct conclusion from this output, that the port 5432 is open?