FRITZ WLAN-7170 Router Manual PDF (Setup & Configuration Guide)

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FRITZ!DSL Diagnosis

FRITZ!Box

56

When the FRITZ!DSL Start Center is started, the AVM web

site is automatically checked for new updates every 30

days. You will be informed when a new update is available.

7.6

FRITZ!DSL Diagnosis

FRITZ!DSL Diagnosis reports comprehensively about all of

the details of the DSL connection, including data transmis-

sion and the activated fast-path mode. The integrated com-

prehensive DSL diagnosis makes it possible to monitor the

FRITZ!Box connection and installation.

7.7

Web Test

Click the “Web Test” button in the FRITZ!DSL Start Center to

start the

WebWatch program. WebWatch tests the quality

of your Internet connection, and displays the results of

these tets graphically.

Once any URL is entered, WebWatch sends a signal to the

destination address.

The response times measured and the path of the data

packets through the Internet are displayed in a diagram

and in an overview.

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FRITZ!Box

57

More about WLAN

8

More about WLAN

WLAN is a radio technology that allows Ethernet networks and access to

the Internet to be provided without cable connections. This allows multi-

ple users to share one wireless Internet connection.

8.1

Standards

The WLAN

standards

IEEE 802.11b,

IEEE 802.11g

and

IEEE 802.11i were developed by the Institute of Electrical

and Electronic Engineers (IEEE).

Standards for the Throughput Rate

Data Throughput

The standards IEEE 802.11b and IEEE 802.11g define the

transmission rate within a wireless LAN. These standards

differentiate between gross and net transmission rates. The

net speed describes the transmission rate of the user data.

The standards are intended for different frequency bands.

The FRITZ!Box supports both standards. WLAN adapters

based on one or more of the standards listed can be used

for WLAN connections with the FRITZ!Box.

Range

The range within a WLAN is highly dependent on the follow-

ing three factors:

°

the WLAN adapter used,

°

the structural conditions

°

the amount of radio traffic on the same frequency

band. Other WLAN networks, microwave ovens or

Bluetooth transmitters (mobile telephones) may be

active.

Standard

Frequency Band /

Frequency Bands

Gross Data Throughput

Net Data Throughput

802.11b

2.4 GHz

11 Mbit/s

5 Mbit/s

802.11g

2.4 GHz

54 Mbit/s

25 Mbit/s

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Setting the Right Standard in the FRITZ!Box

FRITZ!Box

58

IEEE 802.11b

With a maximum throughput rate of 11 Mbit/s, this is the

oldest standard for radio networks. Older WLAN adapters of

the first generation can communicate with the FRITZ!Box

using 802.11b. However, if the WLAN adapter supports

newer standards such as 802.11g, the latest standard

should be used.

IEEE 802.11g

This is currently the most common WLAN standard. It com-

municates with a maximum of 54 Mbit/s in the 2.4-GHz fre-

quency range (ISM) and guarantees broad compatibility

with many WLAN devices. However, due to heavy use of the

2.4-GHz range, interference is more common than in the

less-used 5-GHz range.

Setting the Right Standard in the FRITZ!Box

In order to be able to set the right standard for throughput,

you must first switch to the Expert Mode on the user inter-

face:

1.

Select the menu “Settings / Advanced Settings / Sys-

tem / Expert Mode”.

2.

Select “Show expert settings” and then click “Apply”.

You must configure the standard you want to use for the

transmission rate in the FRITZ!Box. The settings is config-

ured in the “Settings / WLAN / Radio Settings” menu, in the

“Mode” field.

Note the following for the configuration of this setting:

°

In order to communicate with each other, the

FRITZ!Box and all WLAN adapters must work in the

same frequency band.

°

The standard you configure in the FRITZ!Box must be

compatible with the standards of all WLAN adapters

used in the WLAN.

Make a note of which standards the WLAN adapters in your

network are compatible with and then set the correct mode

based on this information.

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FRITZ!Box

59

The Standard for Security

IEEE 802.11i

The WPA security mechanism is defined in the IEEE 802.11i

standard. WPA2 is an extension of the familiar security

mechanism WPA (Wi-Fi Protected Access).

The main feature of the extension of WPA to WPA2 is the

AES-CCM encryption process.

FRITZ!Box supports the AES encryption procedure as part of

the WPA2 mechanism, and the TKIP encryption procedure as

part of the WPA mechanism. This means that the FRITZ!Box

can be used in combination with any WLAN adapters that al-

so support WPA2 with AES or WPA with TKIP.

8.2

Security

Security is of utmost importance within radio networks. Ra-

dio signals can also be received outside of office or resi-

dential spaces and abused for criminal purposes.

Therefore it is important that no unauthorized users can

register in a WLAN to use its Internet access or shared net-

work resources.

FRITZ!Box includes settings on various levels that contrib-

ute to the security of your WLAN and thus to the security of

your computers.

Mechanism

Encryption

WPA

TKIP (Temporary Key Integrity Protocol)

WPA2

TKIP

AES-CCM

based on the extremely secure AES (Advanced

Encryption Standard) procedure. CCM

(Counter with CBC-MAC) defines how the AES

procedure is applied to WLAN packets.

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Encryption

FRITZ!Box

60

Encryption

The

most

important

security

setting

is

encryption.

FRITZ!Box supports the security mechanisms WEP (Wired

Equivalent Privacy), WPA (Wi-Fi Protected Access) and

WPA2 as follows:

°

As part of the WEP mechanism a static key is deter-

mined to serve for the encryption of the user data. The

key must also be entered in the WLAN settings of the

WLAN clients.

°

The WPA and WPA2 mechanisms provide for authenti-

cation while the connection is being established. For

this a WPA password must be defined.

When WPA is selected, the TKIP encryption method is used

to encrypt the user data. In WPA2 the AES-CCMP encryption

method is used.

The security mechanis selected must also be supported by

your WLAN adapter.

The user data are encrypted using an automatically gener-

ated key. This key is regenerated at regular intervals.

The WPA password used may be 8 to 63 characters in

length. For increased security, however, the password

should be at least 20 characters long. Use numerals, letters

and special characters and combine capitals and lower-

case letters.

Encryption Configured in the Factory Settings

In the FRITZ!Box a combined encryption “WPA + WPA2” with

the TKIP/AES-CCMP encryption method is preconfigured.

This setting allows you to use WLAN adapters that support

WPA (TKIP) or WPA2 (AES-CCMP) or both methods.

It is advisable to change the preconfigured WLAN key as

soon as possible. Changes to the settings can be config-

ured on the FRITZ!Box user interface.

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