New RaspPi users may have an issue remotely (outside of LAN) accessing a wifi ONLY BrewPi Server (i.e. not ethernet cable connected). This is because external port forwarding from many routers will have a difficult time forwarding correctly (from external ...no issue if within LAN or using VPN).
seems that eternal port forwarding (without ethernet, eth0, connected, REQUIRES the implementation of the static IP to be hard coded (i.e. not via GUI):
ssh into your RaspPi:
sudo ssh pi@YOUR.RASP.Pi.IP
sudo cd /etc/
sudo nano dhcpcd.conf
edit the /etc/dhcpcd.conf file and add the the following:
where 192.168.1.XX is your RaspPi 's static IP for the wlan0 (wifi adapter). I would recommend also adding an IP reservation to your router OR place the RaspPi's wifi IP outside the dhcp range on your router.
The GUI assignment of defining an IP does NOT make it static...and in turn will not allow your router to port forward to the wlan adapter