Configuring Icmp; Figure 116 Remote Management: Dns; Table 86 Remote Management: Dns - ZyXEL Communications P-660HW-D User Manual

Figure 116 Remote Management: DNS

The following table describes the labels in this screen.

Table 86 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

15.8 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-660HW-D 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 15 Remote Management Configuration
203