Port Security; Port Lock Entries - D-Link DES-3028 User Manual

DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch

Port Security

A given ports' (or a range of ports') dynamic
MAC address learning can be locked such that
the current source MAC addresses entered
into the MAC address forwarding table can
not be changed once the port lock is enabled.
Using the Admin State pull-down menu to
Enabled, and clicking Apply can lock the
port.
Port Security is a security feature that prevents
unauthorized computers (with source MAC
addresses) unknown to the Switch prior to
locking the port (or ports) from connecting to
the Switch's locked ports and gaining access to
the network. To view the following window,
open the Security folder and click Port
Security.
The following parameters can be set:
Parameter
From/To
Admin State
Max. Learning
Addr. (0-16)
Lock Address
Mode
Click Apply to implement changes made.

Port Lock Entries

The Port Lock Entries Table window is used to remove an entry from the port security entries learned by the Switch and entered
into the forwarding database. To view the following window, click Security > Port Lock Entries:
Description
A consecutive group of ports may be configured starting with the selected port.
This pull-down menu allows users to enable or disable Port Security (locked MAC address
table for the selected ports).
The number of MAC addresses that will be in the MAC address-forwarding table for the
selected switch and group of ports.
This pull-down menu allows you to select how the MAC address table locking will be
implemented on the Switch, for the selected group of ports. The options are:
Permanent – The locked addresses will not age out after the aging timer expires.
•
DeleteOnTimeout – The locked addresses will age out after the aging timer
•
expires.
DeleteOnReset – The locked addresses will not age out until the Switch has been
•
reset.
Figure 10- 2. Port Security window
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