User's Manual

Chapter 16 Remote Management
AMG1202-T10A User’s Guide
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16.7 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.
Note: If you want your device to respond to pings and requests for unauthorized services,
you may also need to configure the firewall anti probing settings to match.
Figure 95 Advanced > Remote Management > ICMP
The following table describes the labels in this screen.
Table 68 Advanced > Remote Management > ICMP
LABEL DESCRIPTION
ICMP Internet Control Message Protocol is a message control and error-reporting
protocol between a host server and a gateway to the Internet. ICMP uses
Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP
software and directly apparent to the application user.
Respond to Ping
on
The ZyXEL Device will not respond to any incoming Ping requests when Disable
is selected. Select LAN to reply to incoming LAN Ping requests. Select WAN to
reply to incoming WAN Ping requests. Otherwise select LAN & WAN to reply to
both incoming LAN and WAN Ping requests.
Apply Click this to save your changes.
Cancel Click this to restore your previously saved settings.