moodle 3.5 and windose server 2008
When set web IP address in config.php file, in local network we could not connect to sever!
But with loclal IP address no problem
That is pretty typical. You need to set up a site address (www.yoursite.com) and use DNS to resolve it to external ip from outside network and internal ip inside network.
Read this in the docs: Masquerading
Jon