Position your router or access point carefully
Wireless signals can transmit a few hundred feet, so the signal from your network could be broadcast outside of your home. You can help limit the area that your wireless signal reaches by positioning your router or access point close to the center of your home rather than near an outside wall or window.
Change the default SSID
Routers and access points use a wireless network name known as a service set identifier (SSID). Most manufacturers use the same SSID for all of their routers and access points. We recommend that you change the default SSID to keep your wireless network from overlapping with other wireless networks that might be using the default SSID. It makes it easier for you to identify which wireless network is yours, if there's more than one nearby, because the SSID is typically shown in the list of available networks. Check the information that came with your device for instructions about how to change the default SSID.
Change the default administrator name and password
If you have a router or access point, you probably used a default name and password to set up the equipment. Most manufacturers use the same default name and password for all of their equipment, which someone could use to access your router or access point without your knowledge. To avoid that risk, change the default administrator user name and password for your router. Check the information that came with your device for instructions about how to change the name and password.
Use a network security key
If you have a wireless network, you should set up a network security key, which turns on encryption. With encryption, people can't connect to your network without the security key. Also, any information that's sent across your network is encrypted so that only computers that have the key to decrypt the information can read it. This can help avert attempts to access your network and files without your permission. Wi‑Fi Protected Access (WPA or WPA2) is the recommended wireless network encryption method.
Taken from:-http://windows.microsoft.com/en-us/windows/making-network-more-secure#1TC=windows-7
Wireless signals can transmit a few hundred feet, so the signal from your network could be broadcast outside of your home. You can help limit the area that your wireless signal reaches by positioning your router or access point close to the center of your home rather than near an outside wall or window.
Change the default SSID
Routers and access points use a wireless network name known as a service set identifier (SSID). Most manufacturers use the same SSID for all of their routers and access points. We recommend that you change the default SSID to keep your wireless network from overlapping with other wireless networks that might be using the default SSID. It makes it easier for you to identify which wireless network is yours, if there's more than one nearby, because the SSID is typically shown in the list of available networks. Check the information that came with your device for instructions about how to change the default SSID.
Change the default administrator name and password
If you have a router or access point, you probably used a default name and password to set up the equipment. Most manufacturers use the same default name and password for all of their equipment, which someone could use to access your router or access point without your knowledge. To avoid that risk, change the default administrator user name and password for your router. Check the information that came with your device for instructions about how to change the name and password.
Use a network security key
If you have a wireless network, you should set up a network security key, which turns on encryption. With encryption, people can't connect to your network without the security key. Also, any information that's sent across your network is encrypted so that only computers that have the key to decrypt the information can read it. This can help avert attempts to access your network and files without your permission. Wi‑Fi Protected Access (WPA or WPA2) is the recommended wireless network encryption method.
Taken from:-http://windows.microsoft.com/en-us/windows/making-network-more-secure#1TC=windows-7
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