Port numbers identify different applications communicating on a host.
1. HTTP protocol proxy server commonly used port number: 80/8080/3128/8081/9098
2. SOCKS proxy protocol server commonly used 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, the default port number is 80/tcp (the Trojan Executor opens this port)
HTTPS (securely transferring web pages) server, the default port number is 443/tcp 443/udp
Telnet (unsafe text transfer), the default port number is 23/tcp (the port opened by the Trojan Tiny Telnet Server)
FTP, the default port number is 21/tcp (the Trojan Doly Trojan, Fore, Invisible Ports opened by FTP, WebEx, WinCrash and Blade Runner)
TFTP (Trivial File Transfer Protocol), the default port number is 69/udp
SSH (Secure Login), SCP (File Transfer ), port number redirection, the 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, and WinSpy all open this port)
POP3 Post Office Protocol (E-mail), the default port number is 110/tcp
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
WIN2003 remote login, default The 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 For 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
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