The Icmp Screen - ZyXEL Communications P-660H-61 User Manual

Chapter 18 Remote Management
Use this screen to set from which IP address the ZyXEL Device will accept DNS queries and on
which interface it can send them your ZyXEL Device's DNS settings. This feature is not available
when the ZyXEL Device is set to bridge mode. Click Advanced > Remote MGMT > DNS to change
your ZyXEL Device's DNS settings.
Figure 115 Advanced > Remote MGMT > DNS
The following table describes the labels in this screen.
Table 85 Advanced > Remote MGMT > DNS
LABEL
Server Port
Access Status
Secured Client IP
Apply
Cancel

18.7 The ICMP Screen

To change your ZyXEL Device's security settings, click Advanced > Remote MGMT > ICMP. The
screen appears as shown.
If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP response
packet is automatically returned. This allows the outside user to know the ZyXEL Device exists.
Your ZyXEL Device supports anti-probing, which prevents the ICMP response packet from being
sent. This keeps outsiders from discovering your ZyXEL Device when unsupported ports are probed.
226
DESCRIPTION
This displays the service port number for accessing the ZyXEL Device. If the
number is grayed out, it is not editable.
Select the interface(s) through which a computer may send DNS queries to the
ZyXEL Device.
A secured client is a "trusted" computer that is allowed to send DNS queries to
the ZyXEL Device.
Select All to allow any computer to send DNS queries to the ZyXEL Device.
Choose Selected to just allow the computer with the IP address that you specify
to send DNS queries to the ZyXEL Device.
Click this to save your changes.
Click this to restore your previously saved settings.
ADSL Router Series User's Guide