Find Your 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:

  • IP address
  • Subnet mask
  • Default gateway
  • Whether your computer has a static or dynamic IP address
  • IP addresses of primary and secondary DNS servers

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 external IP address. If you use a private IP address, you can have problems with some features, such as virtual private networking.

To find the TCP/IP properties for your computer operating system, use the instructions in the subsequent sections .

Find Your TCP/IP Properties on Microsoft Windows 2003 and Windows 7

  1. Select Start > All Programs > Accessories > Command Prompt.
    The Command Prompt dialog box appears.
  2. At the command prompt, type ipconfig /all and press Enter.
  3. Write down the values that you see for the primary network adapter.

Find Your TCP/IP Properties on Microsoft Windows 8

  1. On the Windows 8 Start page, type command .
  2. In the Apps search results list, click Command Prompt.
    The Command Prompt dialog box appears.
  3. At the command prompt, type ipconfig /all and press Enter.
  4. Write down the values that you see for the primary network adapter.

Find Your TCP/IP Properties on Macintosh OS X 10.x

  1. Select the Apple menu > System Preferences, or select the icon from the Dock.
    The System Preferences dialog box appears.
  2. Click the Network icon.
    The Network preference pane appears.
  3. Select the network adapter you use to connect to the Internet.
  4. Write down the values that you see for the network adapter.

Find Your TCP/IP Properties on Other Operating Systems (Unix, Linux)

  1. Read your operating system guide to find the TCP/IP settings.
  2. Write down the values that you see for the primary network adapter.

See Also

About IP Addresses

Static and Dynamic IP Addresses

About DNS (Domain Name System)

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