Netgear UTM25EW-100NAS ユーザーズマニュアル

LAN Configuration

4-13

Some advantages of the Network Database are:

•

Generally, you do not need to enter either IP address or MAC addresses. Instead, you can just 
select the name of the desired PC or device. 

•

There is no need to reserve an IP address for a PC in the DHCP server. All IP address 
assignments made by the DHCP server are maintained until the PC or device is removed from 
the Network Database, either by expiration (inactive for a long time) or by you.

•

There is no need to use a fixed IP address on a PCs. Because the IP address allocated by the 
DHCP server never changes, you do not need to assign a fixed IP address to a PC to ensure it 
always has the same IP address. 

•

A PC is identified by its MAC address—not its IP address. The Network Database uses the 
MAC address to identify each PC or device. Therefore, changing a PC’s IP address does not 
affect any restrictions applied to that PC. 

•

Control over PCs can be assigned to groups and individuals:

–

You can assign PCs to groups (see 

” on this page) and 

apply restrictions (outbound rules and inbound rules) to each group (see 

). 

–

You can select groups that are allowed access to applications, Web categories, and URLs 
that you have blocked for all other users, or the other way around, block access to 
applications, Web categories, and URLs that you have allowed access to for all other users 
(see 

). 

–

If necessary, you can also create firewall rules to apply to a single PC (see 

). Because the MAC address is used to identify each 

PC, users cannot avoid these restrictions by changing their IP address.

You can view the Network Database, manually add or remove database entries, and edit database 
entries.

To view the Network Database:

1. Select Network Config > LAN Settings from the menu. The LAN Settings submenu tabs 

appear, with the LAN Setup screen in view. 

2. Click the LAN Groups submenu tab. The LAN Groups screen displays (see 

, which shows some examples in the Known PCs and Devices table).