Netgear DGFV338 사용자 설명서

Router and Network Management

6-3

See 

 for the procedure on 

how to use this feature.

Services. The Rules menu contains a list of predefined Services for creating firewall rules. If a 
service does not appear in the predefined Services list, you can define the service. The new service 
will then appear in the Rules menu's Services list. See 

 for the procedure on how to use this feature.

Groups and Hosts. You can apply these rules selectively to groups of PCs to reduce the 
outbound or inbound traffic. The Network Database is an automatically-maintained list of all 
known PCs and network devices. PCs and devices become known by the following methods: 

•

DHCP Client Request – By default, the DHCP server in this Router is enabled, and will accept 
and respond to DHCP client requests from PCs and other network devices. These requests also 
generate an entry in the Network Database. Because of this, leaving the DHCP Server feature 
(on the LAN screen) enabled is strongly recommended. 

•

Scanning the Network – The local network is scanned using standard methods such as ARP. 
This will detect active devices which are not DHCP clients. However, sometimes the name of 
the PC or device cannot be accurately determined, and will be shown as Unknown. 

See 

 for the procedure on how to use this feature.

Schedule. If you have set firewall rules on the Rules screen, you can configure three different 
schedules (i.e., schedule 1, schedule 2, and schedule 3) for when a rule is to be applied. Once a 
schedule is configured, it affects all Rules that use this schedule. You specify the days of the week 
and time of day for each schedule.

See 

 for the procedure on 

how to use this feature.

If you want to reduce traffic by preventing access to certain sites on the Internet, you can use the 
wireless firewall filtering feature. By default, this feature is disabled; all requested traffic from any 
Web site is allowed. 

•

Keyword (and domain name) blocking – You can specify up to 32 words that, should they 
appear in the Web site name (i.e., URL) or in a newsgroup name, will cause that site or 
newsgroup to be blocked by the wireless firewall.

You can apply the keywords to one or more groups. Requests from the PCs in the groups for 
which keyword blocking has been enabled will be blocked. Blocking does not occur for the 
PCs that are in the groups for which keyword blocking has not been enabled.