ZyXEL Communications NBG420N User Manual

Chapter 13 Firewall

NBG420N User’s Guide

Figure 99   Security > Firewall > Services > Adding a Rule 

The following table describes the labels in this screen.

Table 59   Security > Firewall > Services > Adding a Rule

Active

Select this check box to turn the rule on.

Address Type

Do you want your rule to apply to packets with a particular (single) IP, a range of IP 

addresses (for example 192.168.1.10 to 192.169.1.50), a pool of IP address or 

any IP address? Select an option from the drop-down list box that includes: Any 

IP, Single IP, IP Range and IP Pool.

IP Address

Enter the single IP address here. This field is only available when Single IP is 

selected as the Address Type.

Start IP Address

Enter the starting IP address in a range here. This field is only available when IP 

Range is selected as the Address Type.

End IP Address

Enter the ending IP address in a range here. This field is only available when IP 

Range is selected as the Address Type.

IP Pool List

Add an IP address from the IP Pool List to the Selected IP List by highlighting an 

IP address and clicking Add. To delete an IP address from the Selected IP List 

highlight an IP address and click the Remove button. These fields are only 

available when IP Pool is selected as the Address Type.
The IP Pool list gathers its IPs from entries in the ARP table. The ARP table 

contains the IP addresses and MAC addresses of the devices that have sent traffic 

to the NBG420N.

Service Setup