Dont know if this is the right place but it was a long time ago.

We got yesterday our new internet (it goes by cable now so higer speeds)

The problem is that we got a new modem (Cisco EPC3208) + router (sitecom Wireless Gigabit Router 300N WL-351)

My pc , my samsung galaxy's and hp laptop would connect fine with the new router. Only the laptop of my brother is a different story. When i want to connect that one to the router and get internet it would connect to the router. But it wouldnt conntect to the internet (also in details of the status of the network it shows both ipv4 and ipv6 not connected to the internet.

So my question does anyone know how to fix this?

Sorry problem fixed. Brother blocked the network the router made with his firewall