After having firmware upgraded a zyxel zywall 35 firewall and resetting it to default I have inserted all the necessary settings to make our internet connections work. Evrything is working fine. remote desktop is ok. Connection to our website from WAN side is ok. Email sytem is ok. But when I try to type our Fqdn to access our website within our LAN it won’t connect nor with the public IP. When typing The LAN ip it works fine and loads the website.
DNS is opened in the firewall and NAT. All browsing on the internet works fine, so I think DNS is workung fine. So what am I missing in the zywall?