novaflash wroteIn the Admin UI of the Access Server, go to Server Network Settings, and in the 'Host name or IP address' field put a DNS name that resolves to your public IP. If you don't have any, use the public IP. We recommend a DNS name because a DNS record can easily be updated when the IP of the server changes.
Hey novaflash, the public IP bit isn't the problem. I have a DuckDNS address that resolves fine. The issue is when I open AnyConnect it defaults to using the 192.X.X.X address and I have no way to change this that I can see.