The communication protocol (the standard understand computers) called Internet TCP / IP and uses a communication channels or ports to send information between a computer and another.
When you connect to the Internet through your web browser we are sending and receiving data on port 80. When sending an email from Outlook are using port 25, when using the audio Messenger travels through the port 6901 and a long list of ports that we use when we are networked and can see for example http://www. adslzone.net / types-of-Port-and-definicion.html
As I stated before, the ports allow us to communicate with other computers, so it is a channel that has to be monitored so that only programs and ports that we need are those used, because if we all open ports (over 65,000), we would be opening our computer to any malware that would sneak into our computer. For that they are Firewalls
Windows Firewall with integrated, and the router (devices to connect to ADSL) with port management, prevent your computer this checked out. Such protection is compromised when we are strained a Trojan or disable Windows Firewall.
A Trojan is a type of virus that does is open ports on your computer so that others may come more potent virus of sight of the antivirus you have installed, or can remotely take control of your computer making into a "zombie", for example, forward spam. A list of ports used by Trojans is available in http://www.adslzone.net/lista-de-puertos-troyanos.html
To find out if your computer's ports have properly configured it is best to check with a port scanner , so we will say that we have open ports on your computer. The website is accessible INTECO an updated list of utilities to check your computer's ports. Http://cert.inteco.es/Proteccion/Utiles_Gratuitos/Escaneadores_Puertos/
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