I want to protect my computer by setting apassword to my router how

See step 2; it's a matter of just clicking the firewall protection to OFF, from the "set up firewall protection" menu.

Set Up Firewall Protection
You can set up firewall filters and firewall alert notifications on your wireless home network. You
can also block Java Applets, Cookies, ActiveX controls, popup windows, Proxies, and website
access. See Protection Level for more information.
To set the firewall protection level:
1. From any screen, click the Firewall-Protection Level menu link or click the Firewall menu
button on the SBG6782-AC Main Menu and then select Protection Level.
Figure 17 - Firewall Protection Level Screen
2. Click the Firewall Protection Setting drop-down button to select the firewall protection level.
Possible values: Low, Medium, High, or Off
Note: Selecting Off will disable firewall protection on your home network. Your computer(s)
and other Ethernet-enabled devices on your network will be at risk for possible attacks from
viruses and hackers.
3. Select each Web filter that you want to set for the firewall and then click Apply.

try using this method
"yourname","your date of birth","your month birth"

eg: ALEX26FEB
or: DAVID18JAN

To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption to protect your wireless network and Internet from unauthorized access.
Now apply these settings to the wireless card in your laptop/computer.
To secure your wireless network from unauthorized access, please click on this link and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security

To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption to protect your wireless network and Internet from unauthorized access.
Now apply these settings to the wireless card in your laptop/computer.
To secure your wireless network from unauthorized access, please click on this link and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security

To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption to protect your wireless network and Internet from unauthorized access.
Now apply these settings to the wireless card in your laptop/computer.
To secure your wireless network from unauthorized access, please click on this link and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security

To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption to protect your wireless network and Internet from unauthorized access.
Now apply these settings to the wireless card in your laptop/computer.
To secure your wireless network from unauthorized access, please click on this link and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security

Please download the user manual (click here)
Now log in to the admin panel (page 26)
Open the Security section under wireless (page 67-68)

There you can set the password. Page 68 has the description of what security type you have to select according to usage.

Unfortunately, there is no way to recover a lost or forgotten password from a router or access point; you will need to reset the device to factory defaults. However, once the device is reset to factory defaults, you can use the default username ("admin") and password (either "password" or "1234" depending on your router) to reconfigure your router settings.if there is a small hole in the front or back of the router push a hair pin in to reset to factory settings
Ebay you can purchase a Password Unlock/Recovery For Windows 2000/XP/Vista/7

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We are going to reset your password.

On a computer connected to the linksys now.

Click the link below

192.168.1.1

On the page that comes up, it will ask for a username and password.

type in admin for the password, leave the username blank


You are inside the router..

Click on wireless, then right under it click on wireless security.

Where it says, PSK / Passphrase / Or Network key .. There is a text box to the right

In that text box is your password.. If it looks like **************

You will have to type in a new password, and click apply / save settings.

Then.. The router will restart..

You have now found out, or reset your wireless password.

***Note*** If you changed the password.. The current computer will also have to reconnect to the network, and enter the new password.

Let me know how this worked out for you. If my solution helped you, please rate this solution!
It doesn't cost anything and only takes a second, but it is greatly appreciated.
KittyTech

If you need further help, reach me via phone at https://www.6ya.com/expert/carolyn_427ff26936286336

it depends on the router you use go to start all programs under accessories look for Run, cick run then in the run window typ CMD then press enter, then in the Dos prompt type IPconfig then press enter it will show the ipaddress and default gateway ofr your router copy the default gateway type it in Interent explorer tha should open a page where your router settings are it will ask for apassword and user name which you must know to access the router settings and be able to get the network key from the router to be able to input in your computers wireless settings to gain acces to the router and wireless internet, Call your internet service provider if you can remeber having a user name and password,

for Edimax routers user name is admin password should be 1234, linksys user name admin password eitheradmin as well or leav it blank, and yeah for further info under the router there should be a sticker with the router default user name and password on it if not on the sticker call your ISP or whoever provided the router to you for the router user name and password ^_^ hope this info will be helpfull to you ^_^