# Viewing MacViolation information using EDM

Use the following procedure to display a list of boards and ports where network access violations have occurred, and to display the identity of the offending MAC addresses.

## Prerequisites

- Open one of the supported browsers.

- Enter the IP address of the switch to open an EDM session.

## Procedure steps

1. From the navigation tree, double-click Security.

2. In the Security tree, double-click MAC Security.

3. In the work area, click the MacViolation tab.

## Variable definitions

Use the data in the following table to view MacViolation information.

Variable | Value
--- | ---
Address | The MAC address of the device attempting unauthorized network access (MAC address-based security).
Brd | The index of the board. This corresponds to the slot containing the board. The index is 1 when it is not applicable.
Port | The index of the port on the board. This corresponds to the port on which a security violation was seen.