[net]ftp ssh http telnet https service and port

transferred from : http://blog.csdn.net/qq_34642668/article/details/52116490

FTP servers are computers that provide storage space on the Internet, and they provide services in accordance with the FTP protocol. FTP is the protocol dedicated to transferring files. Simply put, a server that supports the FTP protocol is an FTP server.

SSH is the abbreviation for secure Shell, and SSH is the security protocol based on the application layer and the transport layer. SSH is currently a more reliable protocol that provides security for Telnet sessions and other network services. The use of SSH protocol can effectively prevent the information leakage in the remote management process. s S h client is available on a variety of platforms. Almost all U N I x platforms-including H P-u x, L i N U x, A I X, S o L A r i S, Digital UNIX, I r i x, and other platforms-can all run S S H.

HTTP Hypertext Transfer Protocol (Http,hypertext Transfer Protocol) is one of the most widely used network protocols on the Internet. All WWW documents must comply with this standard. HTTP was originally designed to provide a way to publish and receive HTML pages.

The Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main way of Internet remote Login service. It provides users with the ability to perform remote host work on the local computer. Use the Telnet program on the end user's computer to connect to the server. End users can enter commands in the Telnet program that run on the server as if they were entered directly on the server's console. The server can be controlled locally. To start a Telnet session, you must enter a user name and password to log on to the server. Telnet is a common way to remotely control a Web server.

HTTPS(full name: Hypertext Transfer Protocol over secure Socket Layer) is a security-targeted HTTP channel and is simply a secure version of HTTP. That is, the SSL layer is added under HTTP, the security base of HTTPS is SSL, so the detailed content of encryption needs SSL. It is a URI scheme (abstract identifier system) with syntax similar to http: System. For secure HTTP data transfer. Https:url indicates that it uses HTTP, but HTTPS has a different default port than HTTP and an encryption/authentication layer (between HTTP and TCP). The initial development of the system, conducted by Netscape, provides an authentication and encryption method of communication, which is now widely used in security-sensitive communications on the World Wide Web, such as transaction payments.

Common default port numbers
A very important field in the packet format of the network layer---packet is called the protocol number.
For example, if the transport layer is a TCP connection, then the protocol number in the network layer IP packet will have a value of 6,
If it is UDP, that value is the---transport layer.


The Transport layer------the application layer through the Interface Association (the field of the port is called the port).
Use Netstat–an to view the port numbers that are open to the machine.
The following ports are commonly used by proxy servers:
(1). HTTP protocol Proxy Server common port number: 80/8080/3128/8081/9080
(2). Socks Proxy Protocol Server common port number: 1080
(3). FTP (File Transfer) protocol Proxy Server Common port number: 21
(4). Telnet (remote login) protocol proxy Server common port: 23


HTTPServer, the default port number is 80/tcp (Trojan executor open this port);
HTTPS(securely transferring Web pages) server, the default port number is 443/TCP 443/udp;
Telnet(Unsecured text transfer), the default port number is 23/tcp (Trojan tiny Telnet server open port);
FTP, the default port number is 21/tcp (Trojan doly Trojan, Fore, Invisible FTP, WebEx, Wincrash, and Blade Runner open ports);
TFTP(Trivial File Transfer Protocol), the default port number is 69/UDP;
SSH(Secure login), SCP (file transfer), port redirection, the default port number is 22/tcp;


SMTPSimple Mail Transfer Protocol (e-mail), the default port number is 25/tcp (Trojan antigen, Email Password Sender, Haebu Coceda, Shtrilitz Stealth, WINPC, Winspy all open this port);
POP3Post Office Protocol (e-mail), the default port number is 110/tcp;
WebLogic, the default port number is 7001;
Webshpere application, the default port number is 9080;
Webshpere management tool, the default port number is 9090;
JBOSS, the default port number is 8080;
TOMCAT, the default port number is 8080;

WIN2003Remote login, the default port number is 3389;

Symantec Av/filter for MSE, the default port number is 8081;
Oracle database, the default port number is 1521;
ORACLE Emctl, the default port number is 1158;

Oracle XDB (XML database), the default port number is 8080;
Oracle XDB FTP Service, the default port number is 2100;

MS sql*server database server, the default port number is 1433/TCP 1433/udp;
MS sql*server Database Monitor, the default port number is 1434/TCP 1434/udp;
QQ, the default port number is 1080/UDP

[net]ftp ssh http telnet https service and port