The slogan identifies the different applications that communicate on a host.
1.HTTP protocol Proxy Server Common port number: 80/8080/3128/8081/9098
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 number: 23
HTTP server, default port number is 80/tcp (Trojan executor open this port)
HTTPS (securely transferring Web pages) server with a default port number of 443/tcp 443/UDP
Telnet (unsecured text transfer), the default port number is 23/tcp (Trojan tiny Telnet Server open ports)
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 number redirection, default port number is 22/TCP
SMTP Simple 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)
POP3 Post Office Protocol (e-mail), the default port number is 110/TCP
Webshpere application, default port number is 9080
Webshpere management tool, default port number 9090
JBOSS, default port number is 8080
TOMCAT, the default port number is 8080
WIN2003 Telnet, the default port number is 3389
Symantec av/filter for MSE, default port number is 8081
Oracle database with a default port number of 1521
ORACLE Emctl, the default port number is 1158
Oracle XDB (XML database) with a default port number of 8080
Oracle XDB FTP service with a default port number of 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
Common default port numbers for HTTP, HTTPS, etc.