DI-524 wireless problem on Mac (by 2 users)

Hi Boris, Under the advanced menu select filter and you'll see options for MAC filters and IP filters. MAC addresses are not added to the list automatically.
speaking of IP filters, are you using static or dynamic IP addressing, in other words do you have DHCP turned on? As a rule of thumb using DHCP to assign IP addresses is both simpler and slightly more secure, you can find your DHCP server options under the home tab.
Lastly, on your Mac select System Preferences from either the Dock, the Apple menu or your applications folder and select Security and then Firewall to check that your firewall is on but that you have not accidentally disabled/blocked absolutely everything, also in System Preferences check in Network to see what interfaces are being used and have an IP address, as mentioned connecting to the network wirelessly whilst you also have it connected via a network cable is not (for all practical purposes) going to work.