Geek Answers Handbook

What is the difference between starting server binding to 0.0.0.0 versus 127.0.0.1?

It seems that Rails and Django can start binding the server to IP, either

0.0.0.0, 127.0.0.1, or 192.168.1.2  <-- the last one is my local IP

Are there any other options? It seems that 0.0.0.0 and 192.168.1.2 can allow a virtual PC on the same computer to access this website, while 127.0.0.1 cannot.

However, if this is only the same laptop using localhost: 3000 (for Rails), then that doesn't matter. But in any case, 0.0.0.0haps000 will not work.

How it works? What are the usage values โ€‹โ€‹of 0.0.0.0 vs 127.0.0.1 vs 192.168.1.2?

+5
source share
3 answers

Binding to 0.0.0.0 means listening on all interfaces.

127.0.0.1 .

+16

0.0.0.0 IP-. .

+1

If you start the server at 127.0.0.1, it only listens on localhost; if you run it on 0.0.0.0, it listens on any IP address (for example, your local IP address).

This is fine for the local developer - but otherwise, no one but the local machine will be able to see it.

+1
source

More articles:


All Articles