Siemens Gigaset-204A Router Manual PDF (Setup & Configuration Guide)

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53

Security Setup Wizard

SSID

For the wireless network components to be able to communicate with one another, you

must use the same

SSID

(Service Set Identifier).

The default SSID for the Giga762SX WLAN dsl is shown at the label on the bottom of the

device. For security reasons you can change this SSID and deactivate SSID broadcast. If

this option is enabled, the Giga762SX WLAN dsl will send the SSID in all data transfers

and the SSID of the Giga762SX WLAN dsl will be displayed on PCs that have a wireless

network adapter. In this case, unauthorised persons could use the SSID to gain access to

your network.

If you have performed a successful WPS registration before a manual configuration of

security data, this page shows the generated SSID. Make a note of this SSID. You will

need it to manually configure the wireless network adapters that do not support WPS.

ì

If you are using WPS registration, click on

Next >

.

ì

Enter a character string of your choice in the

SSID

field. The SSID is case-sensitive. It

can contain up to 32 characters. Use a combination of letters, digits and special char-

acters.

ì

Deactivate

SSID broadcast

and make a note of the SSID. You will

need for further wireless connections to the Giga762SX WLAN

dsl.

ì

Click

Next >

.

Note:

The connection to the wireless network adapters will be inter-

rupted until the new SSID has also been entered.

Page 52 / 185

54

Security Setup Wizard

Setting up security functions for the wireless network

Wireless networks are even more susceptible to eavesdropping than wired networks.

With conventional network adapters, an intruder only needs a device with a WLAN

adapter (e.g. a notebook or a PDA [Personal Digital Assistant]) with an appropriately

configured network card in order to eavesdrop on every communication made via a

nearby wireless LAN.

The Giga762SX WLAN dsl makes use of effective encryption methods to prevent unau-

thorised eavesdropping as far as possible.

The Giga762SX WLAN dsl is delivered with preset individual encryption (WPA2-PSK/

WPA-PSK with pre-shared Key). You will find this key at the label on the devices bottom.

If all components of your wireless network provide this encryption method there is no

need of any settings in this screen. If not, or if you want to change the preset key (e. g.

if unauthorised persons may have access to your device), you can configure the encryp-

tion for your wireless network in the next step.

You can use the following security mechanisms:

u

WPA2-PSK, WPA-PSK or WPA2-PSK/WPA-PSK (page 54)

u

WEP encryption (Wired Equivalent Privacy, see page 56)

You will find further options for setting up data encryption and authentication in the

Advanced Settings

menu (page 87).

WPA2/WPA with pre-shared key (PSK)

WPA

is a more advanced procedure than WEP for protecting wireless networks. Dynamic

keys, based on TKIP (Temporal Key Integrity Protocol), offer increased security. The new

standard WPA2 uses

AES

(Advanced Encryption Standard) for encryption.

Page 53 / 185

55

Security Setup Wizard

WPA-PSK

is a special WPA mode for private users and users in small companies without

their own authentication server. After a certain period of time (

Rekey interval

), encryp-

tion keys are automatically generated with the pre-shared key, automatically changed

("rekeying") and authenticated between the devices.

This page shows the preset encryption settings.

ì

If you do not want to change the encryption settings, click on

Next >

.

If you yo want to change the pre-shared key:

ì

Select

WPA2-PSK

if WPA2 is supported by all components in the wireless network.

ì

Select

WPA-PSK

only if WPA is supported by all components in the wireless network.

ì

Select

WPA2-PSK / WPA-PSK

if only some components in the wireless network sup-

port WPA.

ì

Enter a key of your choice in the

Pre-shared key

field (min. 8 to max. 63 characters)

and confirm it by repeating the entry. You must set up the same pre-shared key for

all wirelessly connected PCs. Use a combination of letters, digits and special charac-

ters.

ì

By clicking the

Unmask

button, a message showing the pre-

shared key is output in readable characters.

ì

To go to the next step, click

Next >

Note:

Every PC (network adapter) that requires access to a WPA-protected wireless network

must also support WPA. Information about this can be found in the operating manual

for your network adapter.

Page 54 / 185

56

Security Setup Wizard

WEP encryption

WEP (Wired Equivalent Privacy) is an encryption for radio signals in wireless networks

and meets the IEEE 802.11 standard.

If you transmit data wirelessly and not all components in your wireless network support

the higher security standard WPA (page 55), we recommend that you activate

WEP

Encryption

.

WEP encryption and WPS registration cannot be used together in a wireless network.

You can choose either the standard 64-bit key or the more robust 128-bit key. The keys

are generated in hexadecimal or in ASCII format. You must use the same keys for encryp-

tion and decryption for the Giga762SX WLAN dsl and all your wireless network adapters.

ì

Select the

Key length

: 64 bits or 128 bits.

ì

Select the

Input type

, i.e. whether the key is to be entered manually or generated

automatically by means of a

Passphrase

.

Manual key entry

ì

Select the

Key type

,

Hex

or

ASCII

.

If you select

Hex

as the key type you can use the characters

0

to

9

and

A

to

F

.

–

With a 64-bit encryption depth, the key is 10 characters long.

–

With a 128-bit encryption depth, the key is 26 characters long.

If you select

ASCII

as the key type, you can use the characters

0

to

9

,

A

to

Z

,

a

to

z

plus the special characters in the ASCII character set.

–

With a 64-bit encryption depth, the key is 5 characters long.

–

With a 128-bit encryption depth, the key is 13 characters long.

Page 55 / 185

57

Security Setup Wizard

ì

Confirm the key by entering it again in the

Confirm key

field.

Generating a key by means of a Passphrase

ì

Enter a

Passphrase

(up to 32 characters) and confirm it by entering it again. The key

is generated automatically.

ì

To go to the next step, click

Next >

Note:

u

It is very

important

that you make a note of the key or passphrase. You will need

this information to configure the wireless network adapters properly.

u

You have to change the WEP encryption in the wireless network adapters for the

connected PCs in the same way, otherwise they will not be given access to the

Giga762SX WLAN dsl wireless network.

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