70-4
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter70 Configuring Network Admission Control
Prerequisites for NAC
Prerequisites for NAC
When configured to support NAC, the ASA functions as a client of a Cisco Secure Access Control
Server, requiring that you install a minimum of one Access Control Server on the network to provide
NAC authentication services.
Guidelines and Limitations
Following the configuration of one or more Access Control Servers on the network, you must use the
aaa-server command to name the Access Control Server group. Then follow the instructions in the
“Configuring a NAC Policy” procedure on page70-8.
ASA support for NAC Framework is limited to remote access IPsec and WebVPN client sessions. The
NAC Framework configuration supports only single mode.
NAC on the ASA does not support Layer 3 (non-VPN) traffic and IPv6 traffic.
ASA 5555-X AnyConnect Premium license:
Base License: 2 sessions.
Optional permanent or time-based licenses: 10, 25, 50, 100, 250, 500, 750, 1000, 2500, or 5000
sessions.
Optional Shared licenses3: Participant or Server. For the Server license, 500-50,000 in increments
of 500 and 50,000-545,000 in increments of 1000.
ASA 5585-X with
SSP-10
AnyConnect Premium license:
Base License: 2 sessions.
Optional permanent or time-based licenses: 10, 25, 50, 100, 250, 500, 750, 1000, 2500, or 5000
sessions.
Optional Shared licenses3: Participant or Server. For the Server license, 500-50,000 in increments
of 500 and 50,000-545,000 in increments of 1000.
ASA 5585-X with
SSP-20, -40, and -60
AnyConnect Premium license:
Base License: 2 sessions.
Optional permanent or time-based licenses: 10, 25, 50, 100, 250, 500, 750, 1000, 2500, 5000, or
10000 sessions.
Optional Shared licenses3: Participant or Server. For the Server license, 500-50,000 in increments
of 500 and 50,000-545,000 in increments of 1000.
1. If you start a clientless SSL VPN session and then start an AnyConnect client session from the portal, 1 session is used in total. However, if you start the
AnyConnect client first (from a standalone client, for example) and then log into the clientless SSL VPN portal, then 2 sessions are used.
2. The maximum combined VPN sessions of all types cannot exceed the maximum sessions shown in this table.
3. A shared license lets the ASA act as a shared license server for multiple client ASAs. The shared license pool is large, but the maximum number of sessions
used by each individual ASA cannot exceed the maximum number listed for permanent licenses.
Model License Requirement1,2