H3C MSR Series Configuration Manual page 46

•
WEP40/WEP104/WEP128
•
TKIP
•
AES-CCMP
Configuring WEP cipher suite
The WEP encryption mechanism requires that the authenticator and clients on a WLAN have the
same key configured. WEP adopts the RC4 algorithm (a stream encryption algorithm), supporting
WEP40, WEP104 and WEP128 keys.
You can use WEP with either open system or shared key authentication mode:
•
In open system authentication mode, the WEP key is used for encryption only and not for
authentication. A client can access the network without having the same key as the
authenticator. However, if the receiver has a different key from the sender, it discards the
packets received from the sender.
•
In shared key authentication mode, the WEP key is used for both encryption and authentication.
If the key of a client is different from that of the authenticator, the client cannot pass the
authentication and the access of the client is denied.
To configure WEP encryption:
Step
1. Enter system view.
2. Enter WLAN service
template view.
3. Enable the WEP cipher
suite.
4. Configure the WEP default
key.
5. Specify a key index
number.
Configuring TKIP cipher suite
Message integrity check (MIC) is used to prevent attackers from data modification. It ensures data
security by using the Michael algorithm. When a fault occurs to the MIC, the device will consider that
the data has been modified and the system is being attacked. Upon detecting the attack, TKIP will
suspend within the countermeasure interval. No TKIP associations can be established within the
interval.
To configure TKIP cipher suite:
Step
1. Enter system view.
2. Enter WLAN service
template view.
3. Enable the TKIP cipher
suite.
4. Configure the TKIP
countermeasure interval.
Command
system-view
wlan service-template
service-template-number crypto
cipher-suite { wep40 | wep104 |
wep128 }
wep default-key { 1 | 2 | 3 | 4 }
{ wep40 | wep104 | wep128 }
{ pass-phrase | raw-key } [ cipher |
simple ] key
wep key-id { 1 | 2 | 3 | 4 }
Command
system-view
wlan service-template
service-template-number crypto
cipher-suite tkip
tkip-cm-time time
39
Remarks
N/A
N/A
By default, no cipher suite is
selected.
By default, the WEP default key
index number is 1.
Optional.
By default, the key index number
is that configured with the wep
default-key command.
Remarks
N/A
N/A
By default, no cipher suite is
selected.
Optional.
The default countermeasure
interval is 0 seconds. No