Configuring Port Security Features; Configuring Ntk; Configuring Intrusion Protection - HP 5920 Series Configuration Manual

Step
4. Set the port security mode.

Configuring port security features

Configuring NTK

The NTK feature checks the destination MAC addresses in outbound frames to make sure frames are
forwarded only to authenticated devices.
The NTK feature supports the following modes:
ntkonly—Forwards only unicast frames with authenticated destination MAC addresses.
•
ntk-withbroadcasts—Forwards only broadcast frames and unicast frames with authenticated
•
destination MAC addresses.
ntk-withmulticasts—Forwards only broadcast frames, multicast frames, and unicast frames with
•
authenticated destination MAC addresses.
With the NTK feature, any unicast frame with an unknown destination MAC address is discarded. Not
all port security modes support triggering the NTK feature. For more information, see
To configure the NTK feature:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view.
3. Configure the NTK feature.

Configuring intrusion protection

Intrusion protection enables a device to take one of the following actions in response to illegal frames:
• blockmac—Adds the source MAC addresses of illegal frames to the blocked MAC addresses list
and discards the frames. All subsequent frames sourced from a blocked MAC address are dropped.
Command
port-security port-mode
{ autolearn | mac-authentication |
mac-else-userlogin-secure |
mac-else-userlogin-secure-ext |
secure | userlogin |
userlogin-secure |
userlogin-secure-ext |
userlogin-secure-or-mac |
userlogin-secure-or-mac-ext |
userlogin-withoui }
Command
system-view
interface interface-type
interface-number
port-security ntk-mode
{ ntk-withbroadcasts |
ntk-withmulticasts | ntkonly }
151
Remarks
By default, a port operates in
noRestrictions mode.
After enabling port security, you
can change the port security mode
of a port only when the port is
operating in noRestrictions (the
default) mode. To change the port
security mode for a port in any
other mode, first use the undo
port-security port-mode command
to restore the default port security
mode.
Table
Remarks
N/A
N/A
By default, NTK is disabled on a
port and all frames are allowed to
be sent.
5.