How can I find my IP address - not my company's router, but my local machines

Question

I run rails servers at ports 3000 and 5000.

What do I use (or how do I find) the IP address of my Mac?

Not the one used for web browsing which is my companies host supplied IP but rather my local machine one.

I imagine it would be 192.168.x.x?

Answer 1

I can't believe nobody has suggested the simplest method of all, only 2 clicks (or 3 if your adapter isn't at the top of the list).

Click System Preferences, click Network.

It will display the IP address of the adapter under Status to the right of the network adapters. If your device isn't at the top (which will be the default selected) then simply click on the one with the green status. It's going to be either Wi-Fi or Ethernet.

Answer 2

Alternatively, you could try running

ifconfig

in the terminal. It will show a list of interfaces with IPs by default, along with many many other details such as physical addresses. It can also be used to configure network adapter settings, the man page is here: http://linux.die.net/man/8/ifconfig

or you can run man ifconfig on the terminal.

In your case you're probably looking for en0 or en1, look under inet for the IP address.

Answer 3

I used:

ipconfig getifaddr en1

Answer 4

I installed iStat Menues. Now I can see all the IPs, the one from my provieder is called "public ip" and the in the WiFi network is called "private ip" in iStat Menues.

It could also work with the iStat Nano Widget. Only tried the full version. I only need to click on the menu bar item to get the info.

Answer 5

All these answers are good... I'd like to add one thing. If you're trying to get your Mac's IP so you can access the server you're running locally on the same Mac, you can use http://127.0.0.1/ (the local loopback IP) or http://localhost/. It is always the same and you can use it without even being connected to any network.

If you're trying to let others connect to the server on your Mac it would likely be easier to give them your hostname which you can set from the Sharing System Preferences pane (at least as long as they are using a Bonjour-enabled system). Then you can access something like http://mymacbook.local/

Answer 6

You can also go to "About this Mac" and click on the grey text under "Mac OS X" until it displays your local IP address for OS's before Lion.

Also, for Mac OSX versions before Lion, this action also works at the login screen.