H3C Technologies H3C S3100 Series Switches - Manual (Page 451)

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EAD Configuration
Only the S3100-EI series switches support the EAD configuration.
Introduction to EAD
Endpoint admission defense (EAD) is an attack defense solution. Using this solution, you can enhance
the active defense capability of network endpoints, prevents viruses and worms from spreading on the
network, and protects the entire network by limiting the access rights of insecure endpoints.
With the cooperation of switch, AAA sever, security policy server and security client, EAD is able to
evaluate the security compliance of network endpoints and dynamically control their access rights.
With EAD, a switch:
z Verifies the validity of the session control packets it receives according to the source IP addresses
of the packets: It regards only those packets sourced from authentication or security policy server
as valid.
z Dynamically adjusts the VLAN, rate, packet scheduling priority and access control list (ACL) for
user terminals according to session control packets, whereby to control the access rights of users
dynamically.
Typical Network Application of EAD
EAD checks the security status of users before they can access the network, and forcibly implements
user access control policies according to the check results. In this way, it can isolate the users that are
not compliant with security standard and force these users to update their virus databases and install
system patches. Figure 3-1 shows a typical network application of EAD.