ZyXEL ES-3148 Guida Utente

Chapter 30 Access Control

ES-3148 User’s Guide

The following table describes the fields in this screen. 

From the Access Control screen, display the Remote Management screen as shown next. 
You can specify a group of one or more “trusted computers” from which an administrator may 
use a service to manage the Switch. Click Access Control to return to the Access Control 
screen. 

Figure 151   Management > Access Control > Remote Management 

The following table describes the labels in this screen. 

Table 106   Management > Access Control > Service Access Control 

Services

Services you may use to access the Switch are listed here.

Active

Select this option for the corresponding services that you want to allow to access the 

Switch.

Service Port

For Telnet, SSH, FTP, HTTP or HTTPS services, you may change the default service 

port by typing the new port number in the Server Port field. If you change the default 

port number then you will have to let people (who wish to use the service) know the 

new port number for that service. 

Timeout

Type how many minutes a management session (via the web configurator) can be left 

idle before the session times out. After it times out you have to log in with your 

password again. Very long idle timeouts may have security risks. 

Apply

Click Apply to save your changes to the Switch’s run-time memory. The Switch loses 

these changes if it is turned off or loses power, so use the Save link on the top 

navigation panel to save your changes to the non-volatile memory when you are done 

configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Table 107   Management > Access Control > Remote Management 

Entry

This is the client set index number. A “client set” is a group of one or more “trusted 

computers” from which an administrator may use a service to manage the Switch.

Active

Select this check box to activate this secured client set. Clear the check box if you 

wish to temporarily disable the set without deleting it. 

Start Address
End Address

Configure the IP address range of trusted computers from which you can manage this 

Switch.
The Switch checks if the client IP address of a computer requesting a service or 

protocol matches the range set here. The Switch immediately disconnects the 

session if it does not match.