ZyXEL Communications eircom D1000, User Manual

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154
eircom D1000 modem U
ser’s Guide
Chapter 13 Firewall
Table 58
Security > Firewall > Rules > Add (continued)
LABEL DESCRIPTION
Rules Source/Destination Address
Address Type Do you want your rule to apply to packets with a particular (single) IP, a range of IP
addresses (for instance, 192.168.1.10 to 192.169.1.50), a subnet or any IP address?
Select an option from the drop-down list box that includes:
Single Address , Range
Address , Subnet Address and Any Address .
Start IP Address Enter the single IP address or the starting IP address in a range here.
End IP Address Enter the ending IP address in a range here.
Subnet Mask Enter the subnet mask here, if applicable.
Source Mac Address
Specify a source MAC address of traffic to which to apply this firewall rule applies.
Please note that a blank source MAC address is equivalent to any.
Source Interface Specify a source interface to which this firewall rule applies. This is the interface
through which the traffic entered the Device. Please note that a blank source
interface is equivalent to any.
Destination Interface
Specify a destination interface to which this firewall rule applies. This is the interface
through which the traffic is destined to leave the Device. Please note that a blank
source interface is equivalent to any.
Services
Available Services Select a service from the Available Services box.
Edit Customized
Service Click the Edit Customized Service button to bring up the screen that you use to
configure a new custom service that is not in the predefined list of services.
TCP Flag Specify any TCP flag bits the firewall rule is to check for.
Schedule Select the days and time during which to apply the rule. Select Everyday and All
Day to always apply the rule.
OK Click this to save your changes.
Cancel Click this to restore your previously saved settings.
13.4.2 Customized Services
Configure customized services and port numbers not predefined by the Device. For a
comprehensive list of port numbers and services, visit the IANA (Internet Assigned Number
Authority) website. Click the
Edit Customized Services button while editing a firewall rule to
configure a custom service port. This displays the following screen.
Figure 104
Security > Firewall > Rules: Edit: Edit Customized Services