3com DUA1550-0AAA02 Manuel D’Utilisation

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The following takes place when a user connects and logs into the 
network domain.

1 The user’s PC connects to the network and the user logs in with a 

username.

2 The IEEE 802.1X client on the PC sends the user’s ID and credentials to 

the switch. At this stage, the port on the switch is blocked and the PC 
cannot connect to the rest of the network.

3 The switch sends the user's details via RADIUS to IAS. 

a If the user is listed in Active Directory, and the Authorized Users rule 

has been applied to the user (or a group that the user is a member of), 
IAS replies Accept and the switch enables the port.

b If the user is listed in Active Directory, but the Authorized Users rule 

has not been applied to the user (or a group that the user is a member 
of), then the Default Rule will be applied, IAS replies Reject and the 
switch disables the port.

c If the user is not listed in Active Directory, IAS replies Reject and the 

switch disables the port.