I can’t think of a good reason for a home network to broadcast its presence to the world at large. From a security standpoint, you can’t hack it if you don’t know it’s there.
The SSID is network name data your router 
transmits at an interval. Disabling the public broadcast of your wireless network is usually an option on your router ’s basic settings page, once you have configured the clients you wish to allow access. Changing the SSID from the default router name is just as critical. When you first purchase a new router such as a Linksys or Netgear, a default network name is set by the manufactures for the particular router . Changing this name to a unique SSID can help prevent even the savvy hacker who knows your network’s there from hacking into the default network name, even if the network is no longer broadcasting it.
Since every router is different I have listed below the basics steps on how to set up security on your router . This is just a simple guide on the key points you need to tweak. Since their are many router brands out there you will have to reference you routers manual for the exact details.
1. Open up IE (Internet Explorer) or any other web browser that your router supports and type in your routers IP address. Your routers IP address is usually something along the lines of 192.168.0.1. You will then be prompted for the default user name and password, again refer to your routers manual for this reference.
2. Change your administrator password that you just used to login to your router . As I mentioned above this is the default password the manufacture has set by default. If you do not change this password your are vulnerable for someone to hack into your router .
3. Setup your encryption type. Usually found under the Security tab you can find where to enable the encryption. I recommend you using WPA (or WPA-PSK) if all devices on your network support it. Otherwise use 128-bit WEP. Next type in the key you would like to use or you may use a passphrase to generate the key if you’re using WEP. Note: if you are using a passphrase to generate the key you will need to write it down so we can later use it on your client machines.
4. Change your default SSID. This is the name of your wireless network that people will see if they search for a wireless network within the proper range of your router . I recommend changing this to something unique, something that sets you aside from the rest of the world. Typically I rename my routers after villains from movies such as Predator or DrEvil. This way if you choose not to disable your broadcast at least anyone who finds your network might think twice about clicking hacking it.
5. Disable your SSID. By disabling your SSID you have to type in the network name manually and it will not show up in the Windows wireless network scans. You can also turn on MAC address filtering, which limits access to your network to a list of clients that you specifically approve.
