I am connecting my TZ 300 directly to laptop via LAN port but I am unable to access it via web portal, i am using a crossover cable tested and can confirm it is working correctly, I have put the laptop on the same subnet as the default IP for the firewall.
According to Dell the default IP is 192.168.168.168
I have set a static IP on the laptop etc shown below:
Default gateway: 192.168.168.168
I am also unable to detect the device using Dell's setup Tool.