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, then 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: (3). FTP(File Transfer) protocol Proxy Server Common port number: (4). Telnet(remote login) protocol proxy Server Common port : 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; SMTP simple Mail Transfer Protocol (e-mail) 25/tcpantigen email Password Sender haebu Coceda shtrilitz Stealth winpcwinspy POP3 Post Office Protocol (e-mail) , the default port number is 110/tcp; WebLogic, the default port number is 7001; Webshpereapplication, the default port number is 9080; Webshperemanagement tool, the default port number is 9090; JBOSS, the default port number is 8080; TOMCAT, the default port number is 8080; WIN2003 Remote 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 FTPservice, 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

Common default port numbers