Configuring Dns; Configuring Icmp; Figure 93 Remote Management: Dns; Table 67 Remote Management: Dns - ZyXEL Communications P-660H-TX V2 - VERSION 3-40 User Manual

14.8 Configuring DNS

Use DNS (Domain Name System) to map a domain name to its corresponding IP address and
vice versa. Refer to the chapter on LAN for background information.
To change your ZyXEL Device's DNS settings, click Advanced > Remote MGMT > DNS.
The screen appears as shown. 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.

Figure 93 Remote Management: DNS

The following table describes the labels in this screen.

Table 67 Remote Management: DNS

LABEL
Port
Access Status
Secured Client IP A secured client is a "trusted" computer that is allowed to send DNS queries to the
Apply
Cancel

14.9 Configuring ICMP

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-660H-Tx v2 User's Guide
DESCRIPTION
The DNS service port number is 53.
Select the interface(s) through which a computer may send DNS queries to the
ZyXEL Device.
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 Apply to save your customized settings and exit this screen.
Click Cancel to begin configuring this screen afresh.
Chapter 14 Remote Management Configuration
177