The gateway requires following to work properly:

  • ICMP to network gateway
  • DHCP (permission to retrieve address from DHCP server, static IP is not supported)
  • TCP 80,443,8883 to any destination (internet)
  • DNS (UDP/TCP port 53) to DHCP provided DNS servers
  • DNS (UDP/TCP port 53) to Google DNS service (,, since these are used as backup if DHCP does not provide- or provides invalid DNS servers.
  • In addition, any ports you want to access through WiFi Sharing from the Viva Gateway also needs to be allowed through the firewall.