HP SuperStack Firewall Series Manual de usuario descargar pdf (Pagina 56)

56 C

HAPTER

4: B

ASIC

ETTINGS OF THE

IREWALL

Changing the Basic

Network Settings

Click the Settings Tab f ro m t he Network Menu to display the Network

Settings window (see Figure 24 below).

Figure 24

Network Settings, Standard Window

Setting the Network

Addressing Mode

The Network Addressing Mode drop-down list contains four modes:

Standard

Choose Standard if you have IP addresses allocated by your ISP for each

machine that requires access to the Internet. When you select Standard,

Network Address Translation (NAT) is disabled. All nodes on the LAN must

use a valid public IP address.

NAT Enabled

Choose NAT Enabled if you want to use a single IP address for accessing

the Internet, or if you do not have an IP address allocated by your ISP for

each machine that requires access to the Internet. NAT provides

anonymity to machines on the LAN by connecting the entire network to

the Internet using a single IP address. This is useful for two purposes:

■

Additional security is provided because all the addresses on the LAN

are invisible to the outside world.

■

In cases where a network uses invalid IP addresses or if addresses are

in short supply, NAT can be used to connect the LAN to the Internet

without changing the IP addresses of computers and other devices on

the LAN.

Remote authenticated access is not possible with NAT enabled.

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HP SuperStack Firewall Series Manual de usuario Pagina 56