How do config office online server?

i use microsoft office online server 2016
but,nextcloud use lan ip can call office online server
if use wan domain can connect to server ,can’t open document

You are speaking of collabora or onlyoffice? Or you open stuff on ms office, but then how do you access it? Through the NC client? Directly via webdav?

use msoffice
i nextcloud port use 80,Router use NAT mapping to 10086
today ,i use wireshark Sniff nextcloud find…nextcloud return data to 80 port,but router don’t forward to 10086…
i NAT remapping 80 to 80 ,Problem solving