Case Study 6 - Combining Hot Desking With Host Filtering

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Case Study 6 -

This case study describes the tasks that need to be performed in order to

Combining Hot

set up hot desking with the ability to filter out specific hosts. This

Desking With Host

configuration allows infected PCs to be isolated regardless of where the

Filtering

user has connected to the network in a hot desking office environment.

 

The method combines MAC-address based authentication with IEEE

 

802.1X authentication and Auto VLAN.

Network

The following provides an overview of the tasks for a network

Administrator Tasks

administrator responsible for the domain on the network.

1Ensure edge port security is set to MAC-address based authentication (or RADA) And IEEE 802.1X, and Auto VLAN is enabled.

Edge ports are called ‘access ports’ on the Switch 5500.

Using 3Com Network Access Manager:

2Create VLANs and QoS profiles. Use the same VLAN IDs and QoS profile IDs as set up in the network access device (switch or wireless access point), otherwise the network access device may not accept the RADIUS response.

3Decide which VLAN will be the Isolation VLAN.

4Create an Isolation rule.

a Set security permissions for the Isolation rule. Grant READ and WRITE access to the users/groups permitted to apply the rule, grant READ access to all Network Administrators in the domain to ensure they can see that the rule exists even if they are not permitted to apply the rule.

b Set the Actions for the Isolation rule:

select the rule priority, an Isolation rule should have a high priority to ensure it takes precedence over other rules,

set Network Access to Allow,

select the VLAN ID of the Isolation VLAN.

5Ensure the network operators or those individuals responsible for applying the rules have the Network Operator component of 3Com Network Access Manager installed on their PC.

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3Com DUA1550-0AAA02 manual Combining Hot, Desking With Host, Filtering