When a computer receives or sends information, it was a home computer or server, it does so through an open interface to send at a specific time to connect to a router, so data on the Internet. Be used depending on the type of data collected, certain ports.

In the proxy server, there are several ports that are used most frequently. These protocols to communicate with external devices such as routers, for example, through a protocol. Protocols areThus, the devices communicate with each other and determine how the data is sent over the Internet.

The protocol most commonly used by proxy TCP – Transmission Control Protocol. TCP is an essential part of any TCP / IP. While IP – Internet Protocol – deals with packets of data that is sent, TCP is responsible for ensuring that these packages are delivered and that they arrive at their destination in the same order that theysent through a specific port. Some ports use a different type of UDP. Although UDP is also communication between the ports is not guaranteed.

Other commonly used protocols are:

• HTTP – defines the format in which Web browsers and Web sites to communicate with each other

• FTP – defines the format for transferring files

• IMAP – defines the communication between server and client e-mail

• SSLMinutes – formats designed for encrypting communications with

The ports most commonly used proxy are:

TCP port 80

Protocol / Name: WANRemote

Description: door web standards. In the transmission of sensitive data which is port 443, since this trojan recommended vulnerable port. Should be examined to identify weaknesses, though, or for removing spyware and firewall.

TCP port 8000

Protocol / Name:iRDMI

Description: It is a port of Troy.

TCP Port 8080

Protocol / Name: http-alt

Description: An alternative HTTP port. This is a port Trojan sensitive and must be tested to identify weaknesses, though, or for removing spyware and firewall.

TCP Port 8081

Protocol / Name: BlackICE-Registration

Description: The port of network administrator for the program intrusion detection BlackIce by its host-based firewall.

TCP Port443

Protocol / Name: https

Description: A safe haven, which uses the HTTP protocol over SSL. Information sent through this port is encrypted using SSL.

TCP port 444

Protocol / Name: HNS

Description: Use Simple Network Paging Protocol for the transmission of data.

TCP Port 1080

Protocol / Name: Socks

Description: SOCKS port for outgoing TCP services, such as FTP and HTTP. As for port 80 and 8080, is vulnerable to attacks.Attacker who can connect to this port bouncing to other internal hosts that are otherwise protected from direct attacks prompted. Port scans should be made to listen to the attempts to connect to this port.

TCP Port 2301

Protocol / Name: CPQ-wbem

Description: Compaq HTTP port.

TCP 3128

Protocol / Name: ReverseWWWTunnel

Description: Reverse WWW Tunnel Backdoor Port.

TCP Port 3382

Protocol / Name:Fujitsu-neat

Description: Fujitsu Net port theft increased.

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