Change url to http://your_ip or try http://localhost
and add
"port": "4567", or other port.
You need also have unblocked/unlocked that port.

//Sory for my bad english

@MBFTOM said in How to achieve this layout?:

I've taken a look into the plugins but I cannot work this out.

i am looking for a way to add the pages to the header?

Also as for the Login/Register, is there a way to link this to my Wordpress homepage? so when a user is logged to my home page they're also in the Forum?

You mean to navigation, if yes you can add link at
Admin --> General --> Navigation

Install control panel like VestaCP.
Configure all and create wesbite with WP.
Install mongoDB or redis and install NodeBB on subdomain.
Then configure nging proxy