How to configure WEP encryption in Sonicwall TZ devices with built-in wireless

03/26/2020 1,169 People found this article helpful 476,142 Views

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Wired Equivalent Protocol (WEP) can be used to protect data as it is transmitted over the wireless network, but it provides no protection past the SonicWall. It is designed to provide a minimal level of protection for transmitted data, and is not recommended for network deployments requiring a high degree of security. WiFiSec should be enabled in addition to WEP for added security on the wireless network.

Task List:

Part One: Configuration on the SonicWall Appliance

Step 1: Configuring the WLAN Interface
Step 2: Configuring WLAN Zone.
Step 3: Configuring Wireless Settings (WEP encryption, etc)

Part Two: Configuration on the Wireless client computer

Step 1: Connectivity using the Wireless card utility for initial association with the WLAN Zone.

Part One: Configuration on the SonicWall Appliance

Step 1: Configuring the WLAN Interface

The WLAN interface is only available on the TZ 170 Wireless and TZ 170 SP Wireless. You can only configure the WLAN interface with a static IP address.

1. Log into the SonicWall Management GUI, go to Network | Interfaces.
2. Click on the Notepad icon in the Configure column for WLAN Interface. The Edit Interface window is displayed.
3. Enter the IP address (172.16.31.1) and subnet mask (255.255.255.0) of the Zone in the IP Address and Subnet Mask fields.
4. Enter any optional comment text in the Comment field. This text is displayed in the Comment column of the Interface table.
5. Uncheck all supported management protocol(s): HTTP, HTTPS, SSH, Ping, SNMP, and/or SSH. (In this scenario we are not allowing wireless clients to manage the SonicWall to ensure complete security).
6. Click OK.

Step 2: Configuring the WLAN Zone

1. Go to Network | Zones; Click the Edit icon for the WLAN zone. The Edit Zone window is displayed.

2. In the General tab, uncheck Allow Interface Trust. Select any of the following settings to enable the SonicWall Security Services on the WLAN Zone.

– Enforce Content Filtering Service - Enforces content filtering on multiple interfaces in the same Trusted, Public and WLAN zones.

– Enforce Client Anti-Virus Service - Enforces managed anti-virus protection on multiple interfaces in the same Trusted, Public or WLAN zones. SonicWall Client Anti-Virus manages an anti-virus client application on all clients on the zone.

– Enable Gateway Anti-Virus - Enforces gateway anti-virus protection on multiple interfaces in the same Trusted, Public or WLAN zones. SonicWall Gateway Anti-Virus manages the anti-virus service on the SonicWall appliance.

– Enable IPS - Enforces intrusion detection and prevention on multiple interfaces in the same Trusted, Public or WLAN zones.

– Enable Anti-Spyware Service - Enforces anti-spyware detection and prevention on multiple interfaces in the same Trusted, Public or WLAN zones.

– Enforce Global Security Clients - Enforces security policies for Global Security Clients on multiple interfaces in the same Trusted, Public or WLAN zones.

3. Click the Wireless tab, Uncheck Only allow traffic generated by a SonicPoint (if enabled: allows only traffic from SonicWall SonicPoints to enter the WLAN Zone interface)

4. Uncheck SSL-VPN Enforcement (if enabled; requires all traffic that enters into the WLAN Zone be authenticated through a SonicWall SSL-VPN appliance)

5. Uncheck WiFiSec Enforcement.
(All wireless clients must connect to the SonicWall via the SonicWall Global VPN Client if they wish to access anything (policy-allowed LAN resources, policy-allowed WAN access, and other wireless clients).

6. When WiFiSec Enforcement is enabled, you can specify services that are allowed to bypass the WiFiSec enforcement by checking WiFiSec Exception Service and then selecting the service you want to exempt from WiFiSec enforcement.

7. Uncheck Require WiFiSec for Site-to-Site VPN Tunnel Traversal (if enabled: requires WiFiSec security for all wireless connections through the WLAN zone that are part of a site-to-site VPN.)

8. Uncheck Trust WPA traffic as WiFiSec. (Allows WPA to be used as an alternative to WiFiSec.)

9. Click the Guest Services tab. Uncheck Enable Wireless Guest Services (In this scenario we will not be enabling Wireless Guest Users)

10. Click OK to apply these settings to the WLAN zone.

Step 3: Configuring Wireless Settings (Enabling WEP encryption)

1. Go to the Wireless | Settings page, select Access Point from the Radio Role menu.

2. Enable the WLAN port by selecting the Enable WLAN checkbox.

3. SSID: Enter a recognizable string for the SSID; the default string is sonicwall. The SSID can be changed to any alphanumeric value with a maximum of 32 characters. This is the name that will appear in clients’ lists of available wireless connections. (For example: SonicLAB)

4. Click the Apply button located at the top of the page.
5. Go to the Wireless | WEP/WPA Encryption page,
6. In the Authentication Type field: Select WEP - Shared Key

7. In the WEP Key Mode field: Select 128 bit (128-bit is considered more secure than 64-bit. This value is applied to all keys.)

8. From the Default Key menu: Select Key 1 (you can select key number, 1,2,3, or 4)

9. Select the key type to be either Alphanumeric or Hexadecimal.

WEP - 64-bit	WEP - 128-bit
Alphanumeric - 5 characters (0-9, A-Z)	Alphanumeric - 13 characters (0-9, A-Z)
Hexadecimal - 10 characters (0-9, A-F)	Hexadecimal - 26 characters (0-9, A-F)

Alert: The WEP Key (passphrase) must occupy the entire character length, for example: If you choose WEP – 128 bit Alphanumeric (13 characters). The passphase length must be exactly 13 characters else the Wireless Adapter will not receive a WLAN IP address.

10. Type your key into the field and Click Apply button.
11. If you wish to restrict access to wireless clients with certain hardware addresses, go to the Wireless | Mac Filter List page. Click the Apply button when finished.

Part Two: Configuration on the Wireless client computer

Step 1: Connectivity using the Wireless card utility for initial association with the WLAN Zone.

In this scenario, a NetGear WG111 USB wireless adapter is used to connect to the SonicWall.

Note:

• The procedure to associate with a wireless network differs for each manufacturer; refer to your Wireless card product guides for detailed information.
• If you are using a third party wireless card utility, it is highly recommended that you disable the “Wireless Zero Configuration” service. Click here for instructions.

1. Ensure that the Wireless card driver and utility software has been configured correctly on the wireless computer.
2. Ensure that the Wireless Network Connection is enabled under Start | Control Panel | Network Connections.
3. Launch the NetGear Smart Wizard wireless utility software.
4. Click on the Networks tab and scan for “Available Wireless Networks - (SSID)” (For example: SonicLAB)
5. Double click on the SSID to associate with the wireless network.
6. The NetGear wireless utility program will identify the encryption type automatically while associating with the Wireless network.
7. Enter the WEP Key (passphrase)
8. Click on the About tab and ensure that a valid WLAN IP address (172.16.31.x / 24) has been assigned to the wireless adapter.

Test the Connection: You should be able to access the Internet as well as access to the LAN resources of the SonicWall

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How to configure WEP encryption in Sonicwall TZ devices with built-in wireless

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