Watchguard Firebox X5-W Betriebsanweisung Seite 27

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User Guide 11
Installing the Firebox X Edge e-Series
Static: A static IP address is an IP address that always stays the same. If you have a Web server, FTP
server, or other Internet resource that must have an address that cannot change, you can get a
static IP address from your ISP. A static IP address is usually more expensive than a dynamic IP
address, and some ISPs do not supply static IP addresses.
DHCP: A dynamic IP address is an IP address that an ISP lets you use temporarily. ISPs use DHCP
(Dynamic Host Configuration Protocol) to assign you a dynamic IP address. With DHCP, your
computer does not always use the same IP address. Each time you connect to the ISP, a DHCP
server assigns you an IP address. It could be the same IP address you had before, or it could be a
new IP address. When you close an Internet connection that uses a dynamic IP address, the ISP
can assign that IP address to a different customer.
PPPoE: An ISP also can use PPPoE (Point-to-Point Protocol over Ethernet) to assign you an IP
address. Usually, a PPPoE address is dynamic. You must have a user name and a password to use
PPPoE.
The ISP also assigns a subnet mask (also known as the netmask) to a computer. A subnet mask divides a
larger network into smaller networks. A subnet mask is a string of bits that “mask” one section of an IP
address to show how many IP addresses can be on the smaller network.
Read your DSL or cable modem instructions or speak to your ISP to learn if you have a dynamic IP
address or a static IP address.
TCP/IP properties
To learn about the properties of your network, look at the TCP/IP properties of your computer or any
other computer on the network. You must have this information to install your Firebox X Edge. Use the
table below to record the TCP/IP properties of your network. Use the procedures below to find the TCP/
IP properties on your operating system.
Note
If your ISP assigns your computer an IP address that starts with 10, 192.168, or 172.16 to 172.31, then
your ISP uses NAT (Network Address Translation) and your IP address is private. We recommend that you
get a public IP address for your Firebox X Edge external IP address. If you use a private IP address, you
can have problems with some features, such as VPN.
Your TCP/IP Properties
TCP/IP Property Value
IP address
. . .
Subnet mask
. . .
Default gateway
. . .
DHCP enabled Yes No
DNS server(s) Primary
. . .
Secondary
. . .
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