IP settings

The following configuration settings can be made on the "IP Settings" page:

  • IP address: FRITZ!Box can be assigned any address desired.
  • Subnet mask: the corresponding subnet mask
  • Enable DHCP server: You can enable or disable the FRITZ!Box DHCP server.
  • DHCP server assigns IP addresses: the range from which the computers connected to the FRITZ!Box can be assigned IP addresses.

Note: If your Internet service can only be reached using a transfer protocol other than PPPoE, this option must be disabled. Before making any changes on this page, it is important to check carefully whether such changes will require adjustments to the IP settings of the computers connected to FRITZ!Box. FRITZ!Box must be located in the same IP network as every computer that will be used to open the FRITZ!Box user interface. Erroneous IP settings can make it impossible to open the FRITZ!Box user interface in the usual manner.

About the DHCP server: Every time a computer is rebooted the DHCP server will assign it a new IP address. If you have assigned a new IP address in the FRITZ!Box, you must restart the computers connected with the FRITZ!Box.

How to Access the FRITZ!Box User Interface at Any Time via a LAN Connection

FRITZ!Box has a fixed IP address, which cannot be changed and which can be used to access the FRITZ!Box user interface at any time via a LAN connection.

Fixed FRITZ!Box IP address: 169.254.1.1
  1. Connect the computer from which you would like to open the user interface to FRITZ!Box using a network cable. Make sure that the computer is not already connected with FRITZ!Box by some other means.
  2. Restart your computer.
  3. Start a web browser on the computer.
  4. In the address field of the browser, enter the IP address "169.254.1.1" to open the FRITZ!Box user interface.
  5. Check the IP settings in your FRITZ!Box. If necessary, correct the IP settings so that the user interface can be reached by entering the FRITZ!Box IP address or "fritz.box".

User's Manual
The FRITZ!Box user's manual includes a detailed description of the IP settings in the different Windows operating systems and for the operating systems Mac OS X and Linux.

IP Address

You can assign to the FRITZ!Box any IP address desired in this field. The only restriction is that it may not be in a reserved IP address range. The preconfigured IP address is 192.168.178.1.
When assigning the IP address, always use the 1 in the fourth block of the IP address.

Reserved IP Address Ranges
192.168.180.1 - 254 The entire IP network 192.168.180.0 is reserved for internal purposes.
any value between 2 and 253 In every IP address range, the addresses between 2 and 253 in the fourth block of the IP address are reserved for the DHCP server. Specify the address range the DHCP server should use with your entries under "DHCP server assigns IP addresses". When the DHCP server is switched off, these addresses are available without restriction.

Subnet mask

The subnet mask for the IP network can be changed here. We recommend accepting the preset value of 255.255.255.0.

enable DHCP server

When the setting "enable DHCP server" is selected, the FRITZ!Box DHCP server is enabled. Every time the computers connected to FRITZ!Box are started, they are automatically assigned an IP address by the DHCP server.

  • IP Settings on the Computers
    The DHCP server can only assign a computer an IP address when the operating system's option "Obtain an IP address automatically" is selected.
    If a computer is supposed to receive a fixed IP address, the option "Obtain an IP address automatically" must not be selected. The IP address must be entered in the relevant field and must not be an address from the IP address range of the DHCP server.
  • IP Address Range of the DHCP Server
    Specify the IP addresses assigned by the DHCP server under "DHCP server assigns IP addresses". The IP addresses must be from the IP address range of the FRITZ!Box IP network. In the fourth block of the IP address the addresses 2 through 253 are available.
Example:
FRITZ!Box IP address: 172.163.154.1
Subnet mask: 255.255.255.0
IP addresses available to the DHCP server: 172.163.154.2 - 172.163.154.253
Free IP addresses from the IP network: the IP addresses not reserved for FRITZ!Box and the DHCP server

If you would like to assign a fixed IP address to individual computers even though you have a DHCP server, use the free addresses from the IP network.

If the setting "DHCP server enabled" is not selected and the DHCP server is thus disabled, you must assign IP addresses manually to the computers connected with the FRITZ!Box.

  • IP address range
    The IP addresses must be from the FRITZ!Box IP address range.
  • IP Settings on the Computers
    The operating system's option "Obtain an IP address automatically" may not be selected in the IP settings on the computers. The IP address must be entered in the relevant field.
  • Example:
    FRITZ!Box IP address: 172.163.154.1
    Subnet mask: 255.255.255.0
    Free IP addresses from the IP network: 172.163.154.2 - 172.163.154.254

All free IP addresses can be used for the computers.

Click the "OK" button to implement your changes to the settings.