The Icmp Screen - ZyXEL Communications P-660HW-Tx v3 User Manual

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 113 Advanced > Remote Management > DNS
The following table describes the labels in this screen.
Table 83 Advanced > Remote Management > DNS
LABEL
Port
Access Status
Secured Client
IP
Apply
Cancel

18.6 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.
P-660HW-Tx v3 User's Guide
DESCRIPTION
The DNS service port number is 53 and cannot be changed here.
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.
Chapter 18 Remote Management
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