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DISCUS™ DRG A124G
TABLE 3
List of fields on Routing Table inside Routing section
PARAMETER
DESCRIPTION
Metric
When a router receives a routing update that contains a new or changed
destination network entry, the router adds 1 to the metric value indicated in
the update and enters the network in the routing table.
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DISCUS™ DRG A124G
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Firewall Section
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Firewall Section
Firewall Section
The Router’s firewall inspects packets at the application layer, maintains TCP
and UDP session information including time-outs and the number of active ses-
sions, and provides the ability to detect and prevent certain types of network at-
tacks.
Network attacks that deny access to a network device are called
Denial of Ser-
vice (DoS)
attacks. DoS attacks are aimed at devices and networks with a con-
nection to the Internet. Their goal is not steal information, but to disable a de-
vice or network so users no longer have access to network resources.
The router protects against the following
DoS attacks: IP Spoofing, Land Attack,
Ping of Death, IP with zero length, Smurf attack, UDP port loopback, Snork At-
tack, TCP null scan
and
TCP SYN flooding.
The firewall doesn’t significantly affect system performance, so we advise leav-
ing it enabled to protect your network.
Select
Enable
radio button and select the
SAVE SETTINGS
button to open the
firewall submenus (see
Figure 1).
FIGURE 1
Enabling Firewall screen
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DISCUS™ DRG A124G
ACCESS CONTROL
menu item allows users to define the outgoing traffic per-
mitted or not-permitted through the WAN interface. The default is to permit all
outgoing traffic.
FIGURE 2
Access Control configuration on Firewall section
TABLE 1
List of fields on Access Control command menu
PARAMETER
DESCRIPTION
Enable Filtering Function
Click Yes to turn on the filtering function
Normal Filtering Table
Displays a summary of the filtering rules configured
To add a PC to the filtering table:
•
Click
Add PC
button on the Access Control screen
•
Define the appropriate settings for client PC services
•
Click
OK
button and then click
SAVE SETTINGS
button to save your set-
tings.
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DISCUS™ DRG A124G
Insertion of new access limitation on Access control
FIREWALL >> MAC FILTER
The Router can also limit the access of hosts within the local area network
(LAN).
The MAC Filtering Table
allows the Router to enter up to 32 MAC ad-
dresses that are not allowed access to the WAN port. Please note that this filter
only applies to Ethernet clients.
FIGURE 4
MAC Filter configuration on MAC Filter Table command
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Firewall Section
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