Two options are available for providing end users access to the intranet that contains a portal:
An open Portal Server that runs using HTTP or HTTP SSL. This option provides end users access only to the portal and the resources made available directly through the portal.
A secure Portal Server that runs with the Secure Remote Access server. This option provides end users with secure remote access to the following:
Intranet file systems
Applications
Web sites
The portal and resources made available directly through the portal
Only the IP address of the Gateway is published to the Internet.