ZyXEL p-660hwp Guia Do Utilizador
Chapter 17 Remote Management Configuration
P-660HWP-Dx User’s Guide
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Figure 142 Remote Management: DNS
The following table describes the labels in this screen.
17.8 Configuring ICMP
To change your P-660HWP-Dx’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 P-660HWP-Dx, an ICMP
response packet is automatically returned. This allows the outside user to know the P-
660HWP-Dx exists. Your P-660HWP-Dx supports anti-probing, which prevents the ICMP
response packet from being sent. This keeps outsiders from discovering your P-660HWP-Dx
when unsupported ports are probed.
ICMP. The screen appears as shown.
If an outside user attempts to probe an unsupported port on your P-660HWP-Dx, an ICMP
response packet is automatically returned. This allows the outside user to know the P-
660HWP-Dx exists. Your P-660HWP-Dx supports anti-probing, which prevents the ICMP
response packet from being sent. This keeps outsiders from discovering your P-660HWP-Dx
when unsupported ports are probed.
Table 103 Remote Management: DNS
LABEL
DESCRIPTION
Port
The DNS service port number is 53.
Access Status
Select the interface(s) through which a computer may send DNS queries to the P-
660HWP-Dx.
Secured Client IP A secured client is a “trusted” computer that is allowed to send DNS queries to the
P-660HWP-Dx.
Select All to allow any computer to send DNS queries to the P-660HWP-Dx.
Choose Selected to just allow the computer with the IP address that you specify to
Select All to allow any computer to send DNS queries to the P-660HWP-Dx.
Choose Selected to just allow the computer with the IP address that you specify to
send DNS queries to the P-660HWP-Dx.
Apply
Click Apply to save your customized settings and exit this screen.
Cancel
Click Cancel to begin configuring this screen afresh.