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2.6.3 Anti-DoS (Denial of Service)
The Broadband router's firewall can block common hacker attacks, including Denial of Service, Ping of Death, Port Scan
and Sync Flood, .etc. If Internet attacks occur the router can log the events.
Parameters
Description
DoS Prevention Enable
Enables selected Anti-DoS features.
Ignore LAN-Side Check
Skip DoS checks for all LAN
WAN packets.
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Whole system flood
System-wide DoS threshold for SYN/FIN/UDP/ICMP flooding.
Per-source IP flood
SYN/FIN/UDP/ICMP flooding threshold per host. Offending host would be blocked for
120 seconds (default) if
Source IP Blocking
is enabled.
Whole system FlowCnt Control
System-wide Flow Count Control for TCP/UDP or Both protocol.
Per-source IP FlowCnt Control
SYN/FIN/UDP/ICMP Flow Count Control per host. Offending host would be blocked for
120 seconds (default) if
Source IP Blocking
is enabled.
TcpUdpPortScan
Port scan detection. Sensitivity could be Low or High.
All DoS items
System-wide Dos detection.
Click <
Apply>
at the bottom of the screen to save the above configurations. You can now configure other advance
sections or start using the router (with the advance settings in place)
2.6.4 DMZ Host
If you have a local client PC that cannot run an Internet application (e.g. Games) properly from behind the NAT firewall,
then you can open the client up to unrestricted two-way Internet access by defining a DMZ Host. The DMZ function
allows you to re-direct all packets going to your WAN port IP address to a particular IP address in your LAN. The
difference between the virtual server and the DMZ function is that the virtual server re-directs a particular service/Internet
application to a particular LAN client/server, whereas DMZ re-directs all packets (regardless of services) going to your
WAN IP address to a particular LAN client/server.
Parameters
Description
Enable DMZ
Enable/disable DMZ
Note
: If there is a conflict between the Virtual Server and the DMZ setting, then Virtual
Server function will have priority over the DMZ function.
DMZ Host
Input the IP address of a particular host in your LAN that will receive all the packets
originally going to the WAN port/Public IP address above
Note
: You need to give your LAN PC clients a fixed/static IP address for DMZ to work
properly.
General L4 protocol forward
Check this to enable the general layer 4 protocol forwarding function.
ICMP forward
Check this to allow the ICMP packets forward to the DMZ host.
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Chapter 3
Status
The Status section allows you to monitor the current status of your router. You can use the Status page to monitor: the
connection status of the Broadband router's WAN/LAN interfaces, the current firmware and hardware version numbers,
any illegal attempts to access your network, and information on all DHCP client PCs currently connected to your network.
Parameters
Description
3.1 Status and Information
Shows the router’s system information
3.2 Logs
This router supports five types of Log messages: System Log, ACL Log, URL filter, DoS
Log and New connection Log.
Select one of the above Status selections and proceed to the manual’s relevant sub-section
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3.1 Status and Information
The Status and Information section allows you to view the router’s system information
Parameters
Description
Information
You can see the router’s system information such as the router’s: System Information, LAN
Information, WAN Information, and Wireless Information.
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3.2 Logs
This router supports five types of Log messages: System Log, ACL Log, URL filter, DoS Log and New connection Log.
You can Enable or Disable each of these Logs.
3.2.1 System Log
3.2.2 ACL Log
3.2.3 URL Filter Log
3.2.4 DoS Log
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