Why is the forwarded port not working?

Question

Vagrant

Using Vagrant, I set up a virtual machine with Ubuntu server and PHP.

Port forwarded:
host: '1234'
guest: '1144'

When starting vagrant (vagrant up) it says:

==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
    default: Adapter 2: hostonly
==> default: Forwarding ports...
    default: 22 => 8016 (adapter 1)
    default: 1144 => 1234 (adapter 1)
    default: 22 => 2222 (adapter 1)

I run the built-in PHP server on a virtual machine:

$ php -S 0.0.0.0:1144
PHP 5.5.29-1+deb.sury.org~trusty+3 Development Server started at Thu Dec 24 10:47:34 2015
Listening on http://0.0.0.0:1144
Document root is /home/vagrant
Press Ctrl-C to quit.

I'm trying to open on the host machine (i.e. the main OS that is on the computer, not a virtual machine) address: 127.0.0.1:1234
or
192.168.56.101:1234

It does not open, most likely I messed up with IP or ports, until I figured out what exactly .

Answer 1

Found a solution, answering my own question.
1. The network setup in VirtualBox looks like this:
prntscr.com/9i3dld
2. We start the built-in PHP server on the virtual machine only under 0.0.0.0 IP, like this:
3. Open port 8081 on the virtual machine to the outside:
4. On the host machine (Windows) in the browser, specify the external IP address of the virtual machine and the port that we opened to the outside:
192.168.56.101:8081
After such "not tricky" :) manipulations it worked.

Answer 2

Try starting the server like this:php -S localhost:1144

Answer 3

Check the Windows firewall (do you have Windows on the main machine?), all firewalls and antiviruses. I have the same problem at work and the problem turned out to be that Casper was blocking "unnecessary" ports, in his opinion.