D-Link xStack DGS-3200 Series, User Manual, Page: 179 / 287

DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch
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box. The default setting is No Limit.
Time Range
Name Tick the check box and enter the name of the Time Range settings that has been previously
configured in the
Time Range Settings window. This will set specific times when this access rule
will be implemented on the Switch.
Ports When a range of ports is to be configured, the Auto Assign check box MUST be ticked in the
Access ID field of this window. If not, the user will be presented with an error message and the
access rule will not be configured. Ticking the All Ports check box will denote all ports on the
Switch.
To view the settings of a previously correctly configured rule, click the corresponding Show Details button on the Access Rule
List window to view the following window:
Figure 10- 21. Access Rule Detail Information window for Packet Content
CPU Access Profile List
Due to a chipset limitation and needed extra switch security, the Switch incorporates CPU Interface filtering. This added feature
increases the running security of the Switch by enabling the user to create a list of access rules for packets destined for the
Switch’s CPU interface. Employed similarly to the Access Profile feature previously mentioned, CPU interface filtering examines
Ethernet, IP and Packet Content Mask packet headers destined for the CPU and will either forward them or filter them, based on
the user’s implementation. As an added feature for the CPU Filtering, the Switch allows the CPU filtering mechanism to be
enabled or disabled globally, permitting the user to create various lists of rules without immediately enabling them.
Creating an access profile for the CPU is divided into two basic parts. The first is to specify which part or parts of a frame the
Switch will examine, such as the MAC source address or the IP destination address. The second part is entering the criteria the
Switch will use to determine what to do with the frame. The entire process is described below.
In the following window, the user may globally enable or disable the CPU Interface Filtering State mechanism by using the radio
buttons to change the running state.
To access this window, click ACL > CPU Access Profile List . Choose Enabled to enable CPU packets to be scrutinized by the
Switch and Disabled to disallow this scrutiny.