@Srachi
cannot connect to the server within the time limit NW-31456-9

Reason:

Some*routers*do not allow*external*servers*topenetrate*the internal network*where*it consider as*a threat,**So*you are*able to*open*everything in internet*Except*playing*online*on*the Playstation*4*.

Solution:

A--*Open*a special*PlayStation*Port*in yourrouter*as follows:

1. Enter your router page in browser
2.*Log in to router
3. Select Advanced Menu
4. Select Firewall Settings from menu on the left side
5. Check Enable DMZ Host
6. Enter DMZ IP Address*( your PS4 IP )
7. Click Save*Sting

B--*Connect*to internet*manually*through*yourPlaystation*4*and put this settings:
******Subnet Mask*: from your internet details
******Default Gateway*from your internet details
******IP Address: for your PS4
******primary DNS*: any dsn you know ( you can use google which is 8.8.8.8 )
******secondary DNS*: any dsn you know ( you can use google which is 8.8.4.4)
S: http://community.eu.playstation.com/.../td-p/21316433