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工具简介
在线端口扫描器
通过该工具可以扫描常用的端口和指定的端口是否开放。
常用端口号：
代理服务器常用以下端口：
1. HTTP协议代理服务器常用端口号：80/8080/3128/8081/9080
2. SOCKS代理协议服务器常用端口号：1080
3. FTP（文件传输）协议代理服务器常用端口号：21
4. Telnet（远程登录）协议代理服务器常用端口：23
HTTP服务器，默认的端口号为80/tcp（木马Executor开放此端口）；
HTTPS（securely transferring web pages）服务器，默认的端口号为443/tcp 443/udp；
Telnet（不安全的文本传送），默认端口号为23/tcp（木马Tiny Telnet Server所开放的端口）；
FTP，默认的端口号为21/tcp（木马Doly Trojan、Fore、Invisible FTP、WebEx、WinCrash和Blade Runner所开放的端口）；
TFTP（Trivial File Transfer Protocol ），默认的端口号为69/udp；
SSH（安全登录）、SCP（文件传输）、端口重定向，默认的端口号为22/tcp；
SMTP Simple Mail Transfer Protocol (E-mail)，默认的端口号为25/tcp（木马Antigen、Email Password Sender、Haebu Coceda、Shtrilitz Stealth、WinPC、WinSpy都开放这个端口）；
POP3 Post Office Protocol (E-mail) ，默认的端口号为110/tcp；
WebLogic，默认的端口号为7001；
WebSphere应用程序，默认的端口号为9080；
WebSphere管理工具，默认的端口号为9090；
JBOSS，默认的端口号为8080；
TOMCAT，默认的端口号为8080；
WIN2003远程登陆，默认的端口号为3389；
Symantec AV/Filter for MSE ,默认端口号为 8081；
Oracle 数据库，默认的端口号为1521；
ORACLE EMCTL，默认的端口号为1158；
Oracle XDB（ XML 数据库），默认的端口号为8080；
Oracle XDB FTP服务，默认的端口号为2100；
MS SQL*SERVER数据库server，默认的端口号为1433/tcp 1433/udp；
MS SQL*SERVER数据库monitor，默认的端口号为1434/tcp 1434/udp；
QQ，默认的端口号为1080/udp
