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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
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To view the following window, click Security > ARP Spoofing Prevention, as shown below:
Figure 9-70 ARP Spoofing Prevention Window
The fields that can be configured in ARP Spoofing Prevention Logging State are described below:
Parameter Description
ARP Spoofing Prevention
Logging State
Select to enable or disable the ARP spoofing prevention logging state here.
Click the Apply button to accept the changes made.
The fields that can be configured in ARP Spoofing Prevention are described below:
Parameter Description
Unit
Select the Switch unit that will be used for this configuration here.
From Port - To Port
Select the appropriate port range used for the configuration here.
Gateway IP
Enter the gateway IP address used here.
Gateway MAC
Enter the gateway MAC address used here.
Click the Apply button to accept the changes made.
Click the Delete button to remove the specified entry.
BPDU Attack Protection
This window is used to display and configure the BPDU attack protection settings. In generally, there are two states in
the BPDU attack protection function. One is normal state, and another is under attack state. The under attack state
has three modes: drop, block, and shutdown. A BPDU protection enabled port will enter an under attack state when it
receives one STP BPDU packet and it will take action based on the configuration.
BPDU protection has a higher priority than the (Forward BPDU) FBPDU setting configured by configure STP
command in the determination of BPDU handling. That is, when FBPDU is configured to forward STP BPDU but
BPDU protection is enabled, then the port will not forward STP BPDU.
BPDU protection also has a higher priority than the BPDU tunnel port setting in determination of BPDU handling. That
is, when a port is configured as BPDU tunnel port for STP, it will forward STP BPDU. However, if the port is BPDU
protection enabled. Then the port will not forward STP BPDU.
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