Range-based IP spoofing

Range-based IP spoofing supports groupings of clients (IP addresses and IP address ranges) that are mapped to specified IP addresses.

Among other uses, range-based IP spoofing facilitates:

• The delivery of web-hosted services when the identification is by source IP address. For example, to receive a web-hosted service, an organization might be required to identify membership to the service via a known IP address.
• IP address-based authentication with an external service when a unique IP address represents a group of users.
• A way to configure traditional IP spoofing for some clients (source IP addresses that don’t match any group are spoofed with their own IP address), range-based IP spoofing for some clients, and standard proxy IP address substitution for some clients. The latter is done by creating a group that specifies the proxy IP address.