How should i set a password in wifi,for security reasons please help ?

It is based on what router you are using ,,, If you click on the link that I have listed as my source it says this ...

Using the network cable that came with your wireless router, you should temporarily connect your computer to one of the open network ports on your wireless router (any port that isn't labeled Internet, WAN, or WLAN). If you need to, turn your computer on. It should automatically connect to your router.

Next, open Internet Explorer and type in the address to configure your router.

You might be prompted for a password. The address and password you use will vary depending on what type of router you have, so refer to the instructions included with your router.

Follow the rest of the directions ... that should help :)

Type in 192.168.2.1. into a browser window.

The router config utilty will load.

Default login is left blank.

Click on System Settings, leave first box blank and in second and third boxes add new password, you must be able to remember this.

Scroll down and click Apply changes.

Next, click on Channel and SSID, in SSID box give your connection a unique name, Untick Broadcast SSID, Protected Mode should be On.

Again Apply Changes.

Then click Security, in Security Mode select WPA, WPA (PSK) or WPA 2, do not use WEP as it is too weak.

Encryption Technique set to AES

Pre-shared Key (PSK) is where you enter your password for other computers to connect to your network.

make this different to your login password and tick Obscure PSK, Apply Changes

Click on Use as Access Point and select Disable, Apply Changes.

Click on MAC address filtering and enter the MAC address of each computer that will be allowed access to your network, Apply Changes.

WAN Ping Blocking, tick Block ICMP Ping, Apply Changes.

Then Logout.

For each computer that connects to your network they will need the network name (SSID) and password (Pre-shared Key (PSK))

do no longer bypass WEP! WEP is like having no protection in any respect. Unplug each little thing (laptop, modem, router, and so on.). Wait 2 or 3 minutes, plug all of it returned in and turn the laptop returned on.