Figure 18-24 Security; Table 18-8 Security - ZyXEL Communications ZyWall 10W User Manual

support anti-probing, which prevents the ICMP response packet from being sent. This keeps outsiders from
discovering your ZyWALL when unsupported ports are probed.
The following table describes the labels in this screen.
LABEL
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 The ZyWALL 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
on
incoming WAN Ping requests. Otherwise select LAN & WAN (& DMZ if your ZyWALL
has a DMZ port) to reply to both incoming LAN and WAN (and DMZ if present) Ping
requests.
Remote Management Screens
ZyWALL Series Internet Security Gateway

Figure 18-24 Security

Table 18-8 Security

DESCRIPTION
18-29