ZYXEL VMG3925-B10B (01) PDF Document

The default login details for your ZYXEL VMG3925-B10B are as follows:

LAN IP Address: http://192.168.1.1

Login: admin

Password: See the device label

To access the Web Configurator, follow these steps:

1. Make sure your ZYXEL VMG3925-B10B hardware is properly connected.

2. Launch your web browser. If you are not automatically redirected to the login screen, go to http://192.168.1.1.

3. A password screen will display. Select your preferred language.

4. Type the default username admin and the randomly assigned default password (found on the device label) in the password screen and click Login. If you have changed the password, enter your new password and click Login.

5. The first time you log in, a screen will prompt you to change the password. Enter a new password, retype it to confirm, and click Change password. If you prefer to use the default password, click Skip.

The following table describes the LED statuses for the ZYXEL VMG3925-B10B. If none of the LEDs are on, the device is not receiving power.

To turn the wireless network on or off, press the WiFi button. Check the WLAN/WPS LED on the front panel to see if the wireless network is active. For the ZYXEL VMG3925-B10B, press the WLAN button for two seconds.

You can use the WPS button to quickly set up a secure wireless connection with a WPS-compatible client. To activate WPS:

1. Make sure the POWER LED is on and not blinking.

2. Press the WPS button for two seconds and release it.

3. Press the WPS button on another WPS-enabled device within range of the ZyxEL VMG3925-B10B. The WLAN/WPS LED flashes amber while a connection is established.

4. Once the connection is successful, the WLAN/WPS LED will shine blue or green.

Note: If your device supports both 2.4 GHz and 5 GHz networks, the connection to the 2.4 GHz network has priority.

If you forget your password or cannot access the Web Configurator, you will need to use the RESET button to reload the factory-default configuration file. This will erase all previous configurations.

1. Make sure the POWER LED is on (not blinking).

2. To reset the device, press and hold the RESET button on your ZYXEL VMG3925-B10B for ten seconds, or until the POWER LED begins to blink, and then release it. When the POWER LED blinks, the defaults have been restored and the device will restart.

Follow these practices regularly to make your ZYXEL VMG3925-B10B more secure and to manage it more effectively:

Change the password: Use a password that is not easy to guess and that consists of different types of characters, such as numbers and letters.

Write down the password: Keep your password in a safe place.

Back up the configuration: Restoring an earlier working configuration can be useful if the device becomes unstable or crashes. If you forget your password, you will have to reset the device to its factory default settings. A backup file allows you to restore your last configuration without re-configuring the device from scratch.

You can use the USB port on your ZYXEL VMG3925-B10B for a cellular WAN backup.

Connect a supported cellular USB dongle with an active SIM card to the USB port. This adds a second WAN interface and allows the device to wirelessly access the Internet via a cellular network. The cellular WAN connection acts as a backup in case the primary DSL or Ethernet WAN connection fails.

To set up a cellular connection, navigate to Network > Broadband > Cellular Backup in the Web Configurator.

This example uses the following parameters to set up a wireless network:

• SSID: Example
• Security Mode: WPA2-PSK
• Pre-Shared Key: DoNotStealMyWirelessNetwork
• 802.11 Mode: 802.11b/g/n Mixed

Follow these steps:

1. In the Web Configurator, go to Network Setting > Wireless to open the General screen. Select More Secure as the security level and WPA2-PSK as the security mode. Configure the screen with the parameters above and click Apply.

2. Go to the Wireless > Others screen and select 802.11b/g/n Mixed in the 802.11 Mode field. Click Apply.

After configuration, you can use WPS or manual configuration to connect your devices.

You can create different wireless network groups for different types of users, each with its own SSID and security settings. For example, you can set up separate networks for Company, VIP, and Guest users.

1. Set up the primary network: Go to Network Setting > Wireless > General. Configure your primary wireless network (e.g., for general company use). Enter the SSID, select the security mode (like WPA2-PSK), and enter a pre-shared key. Click Apply.

2. Set up additional networks: Go to Network Setting > Wireless > Guest/More AP. Click the Edit icon next to an available slot to configure a second wireless network (e.g., for VIPs).

3. In the More AP Edit screen, enter the Wireless Network Name (SSID), select the Security Level and Security Mode, and enter a Password. Click Apply.

4. Repeat the process for a third wireless network group (e.g., for Guests) by clicking another Edit icon in the Guest/More AP screen.

5. After configuring, you can check the status of your new wireless networks in the Guest/More AP screen. Yellow bulbs indicate that the SSIDs are active.

To set up file sharing from a USB device connected to your ZYXEL VMG3925-B10B, follow these steps:

Activate File Sharing:

1. Connect your USB storage device to the USB port on the ZYXEL VMG3925-B10B.

2. In the Web Configurator, navigate to Network Setting > USB Service > File Sharing.

3. Enable the File Sharing Services switch and click Apply. The device will automatically add your USB device to the Information section.

Set Up a Share:

1. In the File Sharing screen, click Add New Share.

2. Click Browse and select the folder on your USB device that you want to share. Click Apply.

3. Select an Access Level (Public or Security). If you choose Security, you must create user accounts in Account Management to grant access.

4. Click Apply to finish.

You can use Windows Explorer or an FTP program to access files on a USB storage device connected to the ZYXEL VMG3925-B10B.

Using Windows Explorer:

In the Windows Explorer address bar, type a double backslash “\\” followed by the IP address of the ZYXEL VMG3925-B10B (default is 192.168.1.1) and press [ENTER]. For example: `\\192.168.1.1`. The shared folders will be available.

Using an FTP Program (e.g., FileZilla):

1. In the FTP program, enter the IP address of the ZYXEL VMG3925-B10B (e.g., 192.168.1.1), your user account name and password, and port 21.

2. Click Quickconnect. Once you log in, the USB device’s contents will be displayed in the `mnt` folder.

You can use the MAC Address Filter to grant or deny network access to specific devices. This example shows how to grant access to one computer while denying all others.

1. Go to Security > MAC Filter in the Web Configurator. Select the Enable check box to activate the MAC filter function.

2. Select Allow for the MAC Restrict Mode. This means only devices on the list will be granted access.

3. Click Add a new setting to add a new entry. Enter the host name and MAC address of the computer you want to allow access for.

4. Click Apply. Now, only the computer with the specified MAC address can access the network. Other devices will be blocked.

1. The default LAN IP address is 192.168.1.1.

2. If you changed the IP address and have forgotten it, you can find it by looking up the default gateway of your computer. On most Windows computers, click Start > Run, type cmd, and then type ipconfig. The IP address listed as the Default Gateway may be the IP address of your ZYXEL VMG3925-B10B.

3. If this does not work, you must reset the device to its factory defaults.

1. Check the cover page of the user manual or the device label for the default login names and passwords.

2. If the default credentials do not work, you will have to reset the device to its factory defaults.

1. Make sure you are using the correct IP address (default is 192.168.1.1).

2. Check the hardware connections and ensure the LEDs are behaving as expected.

3. Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java enabled.

4. If possible, try to log in from another interface (like Telnet) to check the remote management service settings for HTTP and HTTPS.

5. Reset the device to its factory defaults and try to access it with the default IP address.

1. Ensure you have entered the password correctly. The field is case-sensitive, so check if Caps Lock is on.

2. You cannot log in to the web configurator while someone else is logged in via another method (like Telnet). Log out of the other session.

3. Turn the ZYXEL VMG3925-B10B off and on.

4. If the issue persists, reset the device to its factory defaults.

1. Check the hardware connections and make sure the LEDs are behaving as expected.

2. Make sure you entered your ISP account information correctly in the Network Setting > Broadband screen. These fields are case-sensitive.

3. If you are trying to access the Internet wirelessly, ensure the wireless LAN is enabled on both the ZYXEL VMG3925-B10B and your wireless client, and that the settings match.

4. Disconnect all cables from your device and reconnect them.

5. The Ethernet WAN connection has priority over the DSL connection. Ensure your Ethernet WAN port is connected to a modem or router with an active Internet connection. If it doesn’t, remove the Ethernet cable.

6. If the problem continues, contact your ISP.

Interference can be caused by the following factors:

Obstacles: walls, ceilings, furniture, and so on.

Building Materials: metal doors, aluminum studs.

Electrical devices: microwaves, monitors, electric motors, cordless phones, and other wireless devices.

To optimize the speed and quality of your wireless connection, you can:

Move your wireless device closer to the ZYXEL VMG3925-B10B if the signal strength is low.

Reduce wireless interference from other wireless networks or electronics like cordless phones.

Place the ZYXEL VMG3925-B10B where there are minimum obstacles between it and the wireless client.

Reduce the number of wireless clients connecting to the same device simultaneously.

Try closing some programs that use a lot of Internet bandwidth, especially peer-to-peer applications.

Only use firmware specifically for your device’s model. Do NOT turn off the ZYXEL VMG3925-B10B while the firmware upload is in progress.

1. Download the latest firmware file from the Zyxel website.

2. In the Web Configurator, navigate to Maintenance > Firmware Upgrade.

3. Under the Upgrade Firmware section, click Choose File and select the firmware file (.bin) you downloaded. Remember to decompress zipped files first.

4. Click Upload to begin the process. This may take up to two minutes.

5. After a successful upload, the ZYXEL VMG3925-B10B will reboot. Wait two minutes before logging in again.

Navigate to Maintenance > Backup Restore in the Web Configurator.

Backup Configuration:

It is highly recommended that you back up your configuration file before making changes. In the Backup Configuration section, click Backup to save the ZYXEL VMG3925-B10B’s current configuration to a file on your computer.

Restore Configuration:

This allows you to upload a previously saved configuration file.

1. In the Restore Configuration section, click Choose File to find the configuration file you want to upload.

2. Click Upload to begin the process.

3. Do not turn off the device while the configuration file is uploading. After the restore is successful, the login screen will appear, and the device will restart.