Netgear PROSAFE FVS338 User Manual download pdf (Page 49)

FVS338 ProSafe VPN Firewall 50 Reference Manual

LAN Configuration 3-5

v1.0, September 2006

Managing Groups and Hosts

The Known PCs and Devices table on the Groups and Hosts screen contains a list of all known

PCs and network devices, as well as hosts, that are assigned dynamic IP addresses by this router.

Collectively, these entries make up the Network Database. The Network Database is created in two

ways:

• Using the DHCP Server. The router’s DHCP server will accept and respond to DHCP client

requests from PCs and other network devices. Every computer that is responded to will be

added to the Network Database in the Known PCs and Devices table.

• Scanning the Network. The router will scan the local network periodically, using standard

methods such as ARP and NetBIOS, to detect active computers or devices which are not

DHCP clients. For computers that do not support the NetBIOS protocol, the name will be

displayed in the known PCs and Devices table as “Unknown”.

Creating the Network Database

The Network Database offers a number of advantages:

• Generally, you do not need to enter either IP address or MAC addresses. Instead, you can just

select the desired PC or device.

• No need to reserve an IP address for a PC in the DHCP Server. All IP address assignments

made by the DHCP Server will be maintained until the PC or device is removed from the

database, either by expiry (inactive for a long time) or by you.

• No need to use a Fixed IP on PCs. Because the address allocated by the DHCP Server will

never change, you don't need to assign a fixed IP to a PC to ensure it always has the same IP

address.

• MAC-level Control over PCs. The Network Database uses the MAC address to identify each

PC or device. So changing a PC's IP address does not affect any restrictions on that PC.

• Group and Individual Control over PCs

– You can assign PCs to Groups and apply restrictions to each Group using the Firewall

Rules screen (see “Services-Based Rules” on page 4-2).

– You can also select the Groups to be covered by the Block Sites feature (see “Setting

Block Sites (Content Filtering)” on page 4-21).

– If necessary, you can also create Firewall Rules to apply to a single PC (see “Enabling

Source MAC Filtering” on page 4-23). Because the MAC address is used to identify each

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

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Netgear PROSAFE FVS338 User Manual Page 49