WorkPlace User Sent to Realm Selection Page when IP Address is Used
Accessing a custom WorkPlace site through a firewall that performs NAT on the virtual IP address of the site redirects users to the realm selection page, even if a specific realm has been selected for that WorkPlace site.
Consider the following scenario:
An appliance is configured with a WorkPlace site using a Custom host and domain name (wpsite.customdomain.com) and a Virtual IP address (10.0.0.100). The appliance is behind a firewall, which performs a public-to-private address translation on the 10.0.0.100 address. The public IP address in this NAT mapping is 22.214.171.124 and the WorkPlace URL (wpsite.customdomain.com) resolves to this IP address in public DNS.
When a user tries to go to 126.96.36.199 (instead of wpsite.customdomain.com), the realm selection page appears and he or she is directed to the default WorkPlace site.
This issue is by design. The appliance uses the hostname sent in a browser's HTTP request to determine which WorkPlace site the user is trying to access. More specifically, the host header of the HTTP request is used to make this determination.