Linksys SLM224G4S Manuel d'utilisateur télécharger pdf (Page 36)

Chapter 5

Configuration Using the Web-based Utility

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.

•

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.

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Linksys SLM224G4S Manuel d'utilisateur Page 36

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