3com WX3000 Manuel D’Utilisation

 

3-1 

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 device, 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 device: 

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. 

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. 

 shows a typical network application of EAD. 

Figure 3-1 Typical network application of EAD 

Virus patch server

Client

Authentication server

Security policy server

 

 

After a client passes the authentication, the security Client (software installed on the client PC) interacts 

with the security policy server to check the security status of the client. If the client is not compliant with 

the security standard, the security policy server issues an ACL to the device, which then inhibits the 

client from accessing any parts of the network except for the virus/patch server.