Port lookup
Port 27017 — TCP
MongoDB
MongoDB holds documents of data for apps, and apps ask it for the documents they need.
Why it matters
It holds the data apps run on, so it should only answer to the apps that need it, and never to the open internet.
Back to the port listLearn on the job
Ports are daily work on the network desk.
Look up a port here, then see it in real work on the network desk.