ZyXEL Communications P-334W User Manual

Page of 496
Prestige 334W User’s Guide 
Remote Management Screens 
 
14-13 
14.8 Configuring Security 
To change your Prestige’s security settings, click REMOTE MGMT, then the Security tab. The screen 
appears as shown. 
If an outside user attempts to probe an unsupported port on your Prestige, an ICMP response packet is 
automatically returned.  This allows the outside user to know the Prestige exists. Your Prestige supports anti-
probing, which prevents the ICMP response packet from being sent. This keeps outsiders from discovering 
your Prestige when unsupported ports are probed.   
 
Figure 14-8 Security 
The following table describes the labels in this screen. 
Table 14-7 Security 
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.