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Page 101 / 160 Scroll up to view Page 96 - 100
Chapter 15
Firewall
101
15.2.1
Rules Edit Screen
Use this screen to configure firewall rules. In the
Rules
screen, select an index number and click
a
rule’s
Edit
icon.
Figure 54
Firewall > Rules: Edit
Table 51
Firewall > Rules: Edit
LABEL
DESCRIPTION
Active
Select this option to enable this firewall rule.
Rule Name
If you want to select an exiting service, choose
Select a Service
and find the service
to which this rule applies to in the drop-down list box.
If you want to manually configure a service that is not in the list, choose
Custom
Service
. Enter the name of the service and select its protocol in the
Protocol
field.
If you select
ICMP
as your protocol, select the ICMP type in the
ICMP (Type-code)
field below.
Source IP Address
Enter the source IP address.
Source Subnet Mask
Enter the source subnet mask.
Source Port
Enter a single source port or a port range.
Page 102 / 160
Chapter 15
Firewall
102
15.3
DoS Screen
Use the
DoS
screen to enable DoS protection. Click
Security > Firewall > DoS
.
Figure 55
Security > Firewall > DoS
Table 52
Security > Firewall > Dos
LABEL
DESCRIPTION
Denial of
Services
Enable this to protect against DoS attacks. The Router will drop sessions that surpass
maximum thresholds.
Apply
Click this to save your changes.
Undo
Click this to restore your previously saved settings.
Advanced
Click this to go to a screen to specify maximum thresholds at which the Router will start
dropping sessions.
Destination IP
Address
Enter the destination IP address.
Destination Subnet
Mask
Enter the
destination subnet mask.
Destination Port
Enter a single destination port or a port range.
Action for Matched
Packets
select whether to discard (
Drop
), deny
and send an ICMP destination-unreachable
message to the sender of (
Reject
) or allow the passage of (
Permit
) packets that
match this rule.
Table 51
Firewall > Rules: Edit (continued)
LABEL
DESCRIPTION
Page 103 / 160
Chapter 15
Firewall
103
15.3.1
The DoS Advanced Screen
Click
Security > Firewall > DoS > Advanced
to display the following screen.
Figure 56
Firewall > DoS > Advanced
Table 53
Firewall > DoS > Advanced
LABEL
DESCRIPTION
TCP SYN-Request
Count
This is the rate of new TCP half-open sessions per second that causes the firewall to
start deleting half-open sessions. When the rate of new connection attempts rises
above this number, the Router deletes half-open sessions as required to
accommodate new connection attempts.
UDP Packet Count
This is the rate of new UDP half-open sessions per second that causes the firewall
to start deleting half-open sessions. When the rate of new connection attempts
rises above this number, the Router deletes half-open sessions as required to
accommodate new connection attempts.
ICMP Echo-Request
Count
This is the rate of new ICMP Echo-Request half-open sessions per second that
causes the firewall to start deleting half-open sessions. When the rate of new
connection attempts rises above this number, the Router deletes half-open
sessions as required to accommodate new connection attempts.
ICMP Redirect
Select
Enable
to monitor for and block ICMP redirect attacks.
An ICMP redirect attack is one where forged ICMP redirect messages can force the
client device to route packets for certain connections through an attacker’s host.
DoS Log(Log Level:
DEBUG)
Select
Enable
to log DoS attacks.
Page 104 / 160
16
Chapter
Chapter 16
Parental Control
104
C
HAPTER
16
Chapter 16
Parental Control
16.1
The Parental Control Screen
Parental control allows you to block web sites with the specific URL. You can also define time
periods and days during which the Router performs parental control on a specific user
.
Use the
Parental Control
screen to enable parental control, view the parental control rules and
schedules. Click
Security > Parental Control
.
Figure 57
Security > Parental Control
Table 54
Security > Parental Control
LABEL
DESCRIPTION
Parental Control
Select
Enable
to activate parental control.
Add new PCP
Click this if you want to configure a new parental control rule.
Status
This indicates whether the rule is active or not.
A yellow bulb signifies that this rule is active. A gray bulb signifies that this rule is not
active.
PCP Name
This shows the name of the rule.
Home Network
User
This shows the MAC address of the LAN user’s computer to which this rule applies.
Internet Access
Schedule
This shows the days and time on which parental control is enabled.
Network Service
This shows whether the network service is configured. If not,
None
will be shown.
Page 105 / 160
Chapter 16
Parental Control
105
Website Blocked
This shows whether the website block is configured. If not,
None
will be shown.
Modify
Click the
Edit
icon to go to the screen where you can edit the rule.
Click the
Delete
icon to delete an existing rule.
Table 54
Security > Parental Control (continued)
LABEL
DESCRIPTION

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