The setup is the following:
The modem is connected to the router (Sonicwall TZ-170). All computers connected to the router directly have no problem accessing the internet. To the router used to be a hub connected. The hub recently died and got replaced by a switch. Using the hub, all the computers connected to the hub, could get an ip from the router and had no problem connecting. Now with the switch however the computers can't connect anymore.
Do I have to change a setting within the router? Do I need to setup the switch somehow?
Thanks for your help