Configure Modem to enable Internet through LAN and Wi-Fi (WLAN):

Follow below said step by step procedure to configure the BSNL WA3002G4 broadband modem to access Internet from your Desktop and from Laptop (via Wi-fi) at the same time.

1. Open Internet Explorer, type (Or type 192.168.1.1) and press the Enter key on the keyboard.

2. Now a popup screen asks you to enter ID and password to configure your Siemens SL2_141 broadband modem as shown below.

3. Enter below said User name and Password. (Use the default factory user name and password) and click OK.

User name: admin

Password: admin

4. Once you login, you will be at the Device Info page as shown below

5. Click on Advanced Setup link on left pane of the window as shown below

 

6. Select all the boxes under the Remove column and click on Remove button to remove all factory settings. Check the below said screenshot to understand better.

 

7. Once you click remove button, all the factory values will be removed from the modem. Now the screen will look the one provided below.

8. Please Refresh the page by pressing the F5 button on the keyboard. The new window will look the one provided below.

9. Click on Quick Setup on the left pane of the window. You will be at Quick Setup page

10. Then set VPI and VCI values as shown below.

VPI = 0

VCI = 35

11. Then click on Next button.  You will be at Connection Type page.

12. Select PPP over Ethernet (PPPoE), also select Encapsulation Mode = LLC/SNAP- BRIDGINGas shown below. Then click on Next button.

13. On the next page, enter below said details.

PPP Username: Username provided by BSNL.
PPP Password: password provided by BSNL (default password is password)
PPPoE Service Name: Leave this BLANK (though I used my name SiRu or dataone)
Authentication Mode: AUTO

14. You can also select “Enable “Bridge PPPoE Frames Between WAN and Local Ports” option.

15. Then click on Next button.

16. Now you will be at Network Address Translation Settings page.

17. Change the below said settings:

Enable NAT = Yes
Enable Firewall = Yes
Enable IGMP Multicast = Yes
Enable WAN Service = Yes
Service Name = pppoe_0_35_1 or similar name (Do not change it)

18. Click on Next button. Now you will be at Device Setup page as shown below.

19. In this window, select Enable DHCP Server and click Next button

 
20. Now you will be at Wireless – Setup page.

21. Select Enable Wireless, also enter a name for your Wireless (SSID). (Note: I used “SiRu Wi-Fi” as an example)

22. Then click on Next button

23, Now you will be at WAN Setup – Summary page. Click on Save/Reboot button to reboot you modem.

24. It may take 1-2 minutes for the changes to take affect. Close the Internet Explorer browser window now.

25. Congratulations. You have successfully configured both Ethernet and Wireless Internet on BSNL  Broadband ADSL Modem.

source : http://katiharho.blogspot.in