the IPS has a separate management address configured during setup.
You can use one of several tools to manage an IPS (or set of IPS's):
1. IPS Device Manager (IDM) - similar to ASDM (in fact part of the same binary) and primarily used for configuration.
2. IPS Manager Express (IME) - used to manage a relatively small set of IPS's and includes a built-in lightweight database that collect events from the managed systems via the SDEE transport.
3. Cisco Security Manager (CSM) - an enterprise security management product that can manage both IPS's and ASA's (and routers in a limited fashion for that matter)
1 and 2 are free downloads and 3 is a licensed product.