ZyXEL Communications Prestige 642 User Manual
Prestige 642 PPPoE Modem
Web Configurator
3-19
SECURITY LEVEL
DESCRIPTION
Level 2
Level 2 security applies filter rules to prevent incoming (to the Prestige) telnet and
FTP/TFTP sessions as well as stop outgoing NetBIOS calls to the remote node (ISP).
FTP/TFTP sessions as well as stop outgoing NetBIOS calls to the remote node (ISP).
A PPPoE filter that filters out all packets except PPoE packets going out from the
Prestige to the ISP or remote node is also applied.
Prestige to the ISP or remote node is also applied.
Level 3
Level 3 security applies an additional filter (in addition to Level 2 security filters) that
drops all incoming ICMP packets. Many discovery tools such as Ping and Traceroute
use ICMP packets.
drops all incoming ICMP packets. Many discovery tools such as Ping and Traceroute
use ICMP packets.
When you have finished, click Apply to save these settings back to the Prestige or Reset to reset the fields
in this screen.
in this screen.
3.5 Maintenance
Use the Maintenance link to access tools to diagnose and monitor the LAN and WAN status of your Prestige.
3.5.1 Maintenance — System Status
Click the Maintenance link and then click the System Status link to display the screen shown next. Use this
screen to view system status.
screen to view system status.