R2511-HP MSR Router Series Security Configuration Guide(V5)

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of handshake attempts (set by the dot1x retry command) has been made, the network access device sets
the user in the offline state.
If iNode clients are deployed, you can also enable the online handshake security function to check for
802.1X users that use illegal client software to bypass security inspection such as proxy detection and
dual network interface cards (NICs) detection. This function checks the authentication information in
client handshake messages. If a user fails the authentication, the network access device logs the user off.
Configuration guidelines
Follow these guidelines when you configure the online user handshake function:
• To use the online handshake security function, make sure the online user handshake function is
enabled. HP recommends that you use the iNode client software and IMC server to ensure the
normal operation of the online user handshake security function.
• If the network has 802.1X clients that cannot exchange handshake packets with the network access
device, disable the online user handshake function to prevent their connections from being
inappropriately torn down.
• You must disable proxy detection before disabling the online user handshake function.
Configuration procedure
To configure the online user handshake function:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Set the handshake timer.
dot1x timer handshake-period
handshake-period-value
Optional.
The default is 15 seconds.
3. Enter Ethernet interface view.
interface interface-type
interface-number
N/A
4. Enable the online handshake
function.
dot1x handshake
Optional.
By default, the function is enabled.
5. Enable the online handshake
security function.
dot1x handshake secure
Optional.
By default, the function is disabled.
Enabling the proxy detection function
The proxy detection function prevents users from using an authenticated 802.1X client as a network
access proxy to bypass monitoring and accounting. When a user is detected accessing the network
through a proxy, the network access device can send traps to the network management system or log the
user off by sending an offline message.
Before you enable the proxy detection function, complete the following tasks:
• Enable the online user handshake function (see "Configuring the online user handshake function")
.
• Deploy HP iNode client software in your network.
To configure the proxy detection function: