I have it setup to use internal and external addressing and I want to make the system NAT-based. What do I need to do to change the way Helm adds the IP addresses to IIS etc? Currently when a new domain is installed, it configures IIS with the public IP address.
You will need to add the new IP's with the relevant internal and external IP address to Helm.
Then go through and resave each service to use the new IPs.
You will then need to change each site in IIS manually to use the new internal IP.