Greetings! Moderate NAT is a way of saying that your router or network is limiting some connections which [i]could[/i] be why you cannot join your clanmate. Usually, if you cannot connect with other players while having Moderate NAT, it's because one of the players trying to join has a Strict/Closed NAT. [spoiler][b]Moderate NAT Description by Bungie[/b]: 1. Most network connections are allowed between the platform and other players, but some connections may be blocked. 2. Players can play and chat with players who have a NAT Type of OPEN or MODERATE, but cannot connect to players with a STRICT NAT Type.[/spoiler] If you are the owner of your network, or have admin permissions for it, you can attempt to make your NAT type Open, those steps can be [url=https://help.bungie.net/hc/en-us/articles/360049496751]found here[/url]; most of these steps do require changing networking settings. [spoiler][b]DISCLAIMER[/b] Changing the wrong settings on a router or modem can lead to losing access to the internet. Be careful when modifying a router's/modem's settings. Consult the device's manual or documentation before beginning this process.[/spoiler]