ZyXEL Communications P-334W - Manual (Page 203)

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.