Recently I have configured my BSNL connection to always on for a secured WIFI network. In process I have learn that if you set "Network Authentication" to "Open" & "Enable" the "WEP Encryption" you can set a password to prevent unauthorized access. Both WPA - PSK, WPA2 - PSK are considered to be better than WPA & WPA2 encryptions as they were created to overcome the loop holes in WEP Encryption but, be advised that even they can be hacked in a matter of minutes.
To avoid entering user id & password on a Nokia Siemens Residential Router 1600 every time you connect do the following steps.
- Open the browser and type http://192.168.1.1 in the address bar, on being asked type both user id & password as admin, by default it will be admin/admin
- Now click on ADSL >> WAN
- In the 35_1 line (usually the first line) click on Edit
- Click on next, leave default
- Select PPP over Ethernet (PPPoE) & then click on Next
- In the page that appears next provide the user id & password you use to connect to the internet
PPP Username: ((Type your user id in this field))
PPP Password: ((Type your password in this field))
leave the other options at default settings. - Click on Next
- Ensure that Enable NAT & Enable Firewall are checked.
- Click on Next
- Click on Save
Hopefully this should do the trick