User manual

Table 24. Basic Menu Option
Option Description
By increasing the level from low to medium or high
you can restrict traffic to only certain predefined
ports.
IPv4 Firewall
Protection
Prevents all fragmented IP packets from passing
through the firewall.
Block Fragmented IP
packets
Detects and blocks port scan activity originating on
both the LAN and WAN.
Port Scan Detection
Detects and blocks packet floods originating on
both the LAN and WAN.
IP Flood Detection
Prevents the Cable Modem/Router or the PCs from
responding to pings to the Cable Modem/Router’s
WAN IP address or to the devices behind it. This
makes it more difficult for hackers to attack your
PCs and other devices on your network.
ICMP Blocking
Event Log
The Event Log page allows you to send firewall event log reporting to a standard SysLog
server or via email. Individual attack or configuration items can be selected that will be
sent to the SysLog server or emailed so that only the items of interest can be monitored.
Permitted connections, blocked connections, known Internet attack types, and Cable
Modem/Router configuration events can also be logged. The SysLog server must be on
the same subnet as the Private LAN behind the Cable Modem/Router (typically
192.168.0.x).
To access the Event Log page:
1 Click the Router menu tab.
2 Then click the Firewall/Event Log submenu.
Figure 23 shows an example of the menu and Table 25 describes the items you can
select.
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