Cisco Cisco NAC Appliance 4.1.0
C H A P T E R
7-1
Cisco NAC Appliance - Clean Access Server Installation and Administration Guide
OL-12213-01
7
IPSec/L2TP/PPTP/PPP on the CAS (Deprecated)
Warning
These features are deprecated in release 4.1(0) and will be removed in future releases.
This chapter discusses how to configure the encryption mechanisms supported by the CAS.
•
•
•
•
•
•
This chapter describes how to configure secure tunnels between users and the CAS. If you require
support for a larger VPN base, Cisco NAC Appliance allows you to deploy a VPN concentrator in front
of the Clean Access Server. In this case, see
support for a larger VPN base, Cisco NAC Appliance allows you to deploy a VPN concentrator in front
of the Clean Access Server. In this case, see
for
details.
Overview
The Clean Access Server itself supports secure Virtual Private Network (VPN) connections between the
Clean Access Server (CAS) and end user devices. The CAS supports VPN connections via PPTP,
L2TP/IPSec or native IPSec clients. You can use Windows 2000, Windows XP, or other Pre-Shared Key
VPN clients to use this feature. Note that each Clean Access Server supports the following number of
concurrent VPN connections:
Clean Access Server (CAS) and end user devices. The CAS supports VPN connections via PPTP,
L2TP/IPSec or native IPSec clients. You can use Windows 2000, Windows XP, or other Pre-Shared Key
VPN clients to use this feature. Note that each Clean Access Server supports the following number of
concurrent VPN connections:
•
IPSec — no limit is in place
•
PPTP — 64 tunnels
•
L2TP — 64 tunnels