Linksys SLM224G4S - Manual (Page 36)

Chapter  Configuration Using the Web-based Utility
0 24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs
Disabled ports can be reactivated from the Port Settings
screen of the Port Management tab.
Interface Select Unit No. or LAG, then select the desired
interface from the appropriate drop-down menu.
Lock Interface Select this option to lock the interface.
The default is not selected (interface not locked).
Learning Mode Defines the locked port type. This field
is enabled only if Lock Interface is not selected. The
possible values are:
Classic Lock Locks the port using the classic lock
mechanism. The port is immediately locked, regardless
of how many addresses have already been learned.
Limited Dynamic Lock Locks the port by deleting
the current dynamic MAC addresses associated with
the port. The port learns up to the maximum number
of addresses allowed on the port. Both relearning and
aging MAC addresses are enabled.
In order to change the Learning Mode, the Lock Interface
must be unselected. Once the Learning Mode is changed,
the Lock Interface can be reinstated.
Max Entries Specifies the number of MAC addresses
that can be learned on the port. This field is enabled only
if Learning Mode is set to Limited Dynamic Lock. The
default value is 1.
Action on Violation Indicates the action to be applied to
packets arriving on a locked port. The possible values are:
Discard Discards packets from any unlearned source.
This is the default value.
Forward Forwards packets from an unknown source
without learning the MAC address.
Discard Disable Discards packets from any unlearned
source and shuts down the port. The port remains shut
down until reactivated, or until the device is reset.
Enable Trap Enables traps when a packet is received on
a locked port.
Trap Frequency The amount of time (in seconds)
between traps. The default value is 10 seconds.
Update If you click this button, your changes are saved
and appear immediately in the table at the bottom of the
Port Security screen.
The lower portion of the Port Security screen displays
a summary of the settings in the upper portion of the
screen. The settings are displayed for each of the ports
on the Switch.
Click Save Settings to apply the changes, or Cancel
Changes to cancel the changes.
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Security > Management Access List
Use the Management Access List screen to specify IP
addresses that are to be allowed to manage the device,
using an IP address and wildcard mask.
Security > IP Access List
Web IP Filtering
The Management Access List screen contains two sections,
Web IP Filtering and SNMP IP Filtering. These sections are
identical except for the types of IP addresses that they
relate to.
IP Address Enter the web IP address or SNMP IP address
to be allowed.
Wildcard Mask Enter the wildcard mask for the web IP
address or SNMP IP address. Wildcard masks specify which
bits are used and which bits are ignored. A wild card mask
of 255.255.255.255 indicates that no bit is important. A
wildcard of 0.0.0.0 indicates that all the bits are important.
For example, if the source IP address is 149.36.184.198
and the wildcard mask is 255.36.184.00, the first eight bits
of the IP address are ignored, while the last eight bits are
used.
Add to List Click this button to save the IP address and
Wildcard Mask. The information will appear in the list at
the bottom of the screen.
The bottom portions of both the Web IP Filtering and SNMP
IP Filtering sections displays the current IP access list, where
each entry consists of an IP Address and Wildcard Mask. To
delete an entry from the list, select it and click Delete.
Click Save Settings to apply the changes, or Cancel
Changes to cancel the changes.