Classifying Traffic as Trusted or Untrusted

You can classify wired traffic based not only on the incoming physical port and channel configuration but also on the VLAN associated with the port and channel.

About Trusted and Untrusted Physical Ports

By default, physical ports on the controller are trusted and are typically connected to internal networks while untrusted ports connect to third-party APs, public areas, or other networks to which access controls can be applied. When you define a physical port as untrusted, traffic passing through that port needs to go through a predefined access control list policy.

About Trusted and Untrusted VLANs

You can also classify traffic as trusted or untrusted based on the VLAN interface and port/channel. This means that wired traffic on the incoming port is trusted only when the port’s associated VLAN is also trusted, otherwise the traffic is untrusted. When a port and its associated VLANs are untrusted, any incoming and outgoing traffic must pass through a predefined ACL. For example, this setup is useful if your company provides wired user guest access and you want guest user traffic to pass through an ACL to connect to a captive portal.

You can set a range of VLANs as trusted or untrusted in trunk mode. The following table lists the port, VLAN and the trust/untrusted combination to determine if traffic is trusted or untrusted. both the port and the VLAN have to be configured as trusted for traffic to be considered as trusted. If the traffic is classified as untrusted then traffic must pass through the selected session access control list and firewall policies.

Table 31: Classifying Trusted and Untrusted Traffic

Port

VLAN

Traffic Status

Trusted

Trusted

Trusted

Untrusted

Untrusted

Untrusted

Untrusted

Trusted

Untrusted

Trusted

Untrusted

Untrusted

Configuring Trusted/Untrusted Ports and VLANs

You can configure an Ethernet port as an untrusted access port, assign VLANs and make them untrusted, and designate a policy through which VLAN traffic on this port must pass.

In the WebUI

1.Navigate to the Configuration > Network > Ports window.

2.In the Port Selection section, click the port you want to configure.

3.In the Make Port Trusted section, clear the Trusted check box to make the port untrusted. The default is trusted (checked).

4.In the Port Mode section, select Access.

5.From the VLAN ID drop-down list select the VLAN ID whose traffic will be carried by this port.

6.In the Enter VLAN(s) section, clear the Trusted check box to make the VLAN untrusted. The default is trusted (checked).

7.In the VLAN Firewall Policy drop-down list, select the policy through which VLAN traffic must pass. You can select a policy for both trusted and untrusted VLANs.

115 Network Configuration Parameters

Dell PowerConnect W-Series ArubaOS 6.2 User Guide

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Dell 6.2 manual Classifying Traffic as Trusted or Untrusted, Configuring Trusted/Untrusted Ports and VLANs
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