Cisco Systems 3.2 Manuale Utente

RSN with or without Pre-Shared key.

Cranite FIPS140-2 compliant passthrough.

Fortress FIPS140-2 compliant passthrough.

Optional MAC Filtering.

The WEP problem can be further solved using industry-standard Layer 3 security solutions, such as:

Terminated and passthrough VPNs 

Terminated and passthrough Layer Two Tunneling Protocol (L2TP), which uses the IP Security 
(IPSec) protocol.

Terminated and pass-through IPSec protocols. The terminated Cisco WLAN Solution IPSec 
implementation includes: 

Internet key exchange (IKE) 

Diffie-Hellman (DH) groups, and 

Three optional levels of encryption: DES (ANSI X.3.92 data encryption standard), 3DES (ANSI 
X9.52-1998 data encryption standard), or AES/CBC (advanced encryption standard/cipher 
block chaining).

The Cisco WLAN Solution IPSec implementation also includes industry-standard authentication 
using: 

Message digest algorithm (MD5), or

Secure hash algorithm-1 (SHA-1)

The Cisco Wireless LAN Solution supports local and RADIUS MAC Address filtering.

The Cisco Wireless LAN Solution supports local and RADIUS user/password authentication.

The Cisco Wireless LAN Solution also uses manual and automated Disabling to block access to 
network services. In manual Disabling, the operator blocks access using client MAC addresses. In 
automated Disabling, which is always active, the operating system software automatically blocks 
access to network services for an operator-defined period of time when a client fails to authenticate 
for a fixed number of consecutive attempts. This can be used to deter brute-force login attacks.

These and other security features use industry-standard authorization and authentication methods to 
ensure the highest possible security for your business-critical wireless LAN traffic.

Many traditional access point vendors concentrate on security for the Wireless interface similar to that 
described in the 

. However, for secure Cisco Wireless 

LAN Controller Service Interfaces, Cisco Wireless LAN Controller to access point, and inter-Cisco 
Wireless LAN Controller communications during device servicing and client roaming, the operating 
system includes built-in security.

Each Cisco Wireless LAN Controller and Cisco 1000 series lightweight access point is manufactured 
with a unique, signed X.509 certificate. This certificate is used to authenticate IPSec tunnels between 
devices. These IPSec tunnels ensure secure communications for mobility and device servicing.

Cisco Wireless LAN Controllers and Cisco 1000 series lightweight access points also use the signed 
certificates to verify downloaded code before it is loaded, ensuring that hackers do not download 
malicious code into any Cisco Wireless LAN Controller or Cisco 1000 series lightweight access point.