Internet Security Router User
’s Manual
Chapter 9. Configuring Firewall/NAT Settings
55
Field
Description
network.
IP Address
This option allows you to specify an IP address on which this rule will be
applied.
IP Address
Specify the appropriate network address
Subnet
This option allows you to include all the computers that are connected in an
IP subnet. When this option is selected, the following fields become
available for entry:
Address
Enter the appropriate IP address.
Mask
Enter the corresponding subnet mask.
Range
This option allows you to include a range of IP addresses for applying this
rule. The following fields become available for entry when this option is
selected:
Begin
Enter the starting IP address of the range
End
Enter the ending IP address of the range
IP Pool
This option allows you to associate a pre-configured IP pool with this rule.
The available IP pool can be selected from the IP pool drop-down list.
Destination IP
This option allows you to set the destination network to which this rule should apply. Use the drop-
down list to select one of the following options:
Any
This option allows you to apply this rule to all the computers in the
destination network, such as those on the Internet.
IP Address, Subnet,
Range and IP Pool
Select any of these and enter details as described in the Source IP section
above.
Source Port
This option allows you to set the source port to which this rule should apply. Use the drop-down list to
select one of the following options:
Any
Select this option if you want this rule to apply to all applications with an
arbitrary source port number.
Single
This option allows you to apply this rule to an application with a specific
source port number.
Port Number
Enter the source port number
Range
Select this option if you want this rule to apply to applications with this port
range. The following fields become available for entry when this option is
selected.
Begin
Enter the starting port number of the range
End
Enter the ending port number of the range
Destination Port
This option allows you to set the destination port to which this rule should apply. Use the drop-down
list to select one of the following options:
Any
Select this option if you want this rule to apply to all applications with an
arbitrary destination port number.