常用TCP/IP协议端口号

应用协议??????? 端口号/协议??? 说明
ftp-data?????????? 20/tcp????????????? FTP, data
ftp???????????? 21/tcp????????? FTP. control
telnet?????? 23/tcp ?
smtp?????????? 25/tcp????????????? Simple Mail Transfer Protocol
time????????? 37/tcp????????????? timserver ?
time????????? 37/udp????????????? timserver ?
domain?????? 53/tcp????????? Domain Name Server
domain?????? 53/udp????????? Domain Name Server
tftp????????? 69/udp????????? Trivial File Transfer
gopher?????? 70/tcp ?
http????????? 80/tcp????????????? www-http World Wide Web
pop3?????? 110/tcp????????? Post Office Protocol-Version 3
nntp?????? 119/tcp??? Network News Transfer Protocol
netbios-ns??? 137/tcp??? NETBIOS Name Service
netbios-ns??? 137/udp??? NETBIOS Name Service
netbios-dgm 138/udp??? NETBIOS Datagram Service
netbios-ssn??? 139/tcp??? NETBIOS Session Service
imap????????????? 143/tcp??? Internet Message Access Protocol
snmp????????? 161/udp??? SNMP
snmptrap?????? 162/udp SNMP trap
irc???????????????? 194/tcp??? Internet Relay Chat Protocol
ipx???????????? 213/udp???? IPX over IP
ldap???????????? 389/tcp???? Lightweight Directory Access Protocol
https????????? 443/tcp
https????????? 443/udp
uucp????????? 540/tcp
ldaps????????? 636/tcp??? LDAP over TLS/SSL
doom????????? 666/tcp??? Doom Id Software
doom????????? 666/udp???? Doom Id Software
phone?????? 1167/udp???? Conference calling
ms-sql-s??????? 1433/tcp???? Microsoft-SQL-Server
ms-sql-s??? 1433/udp???? Microsoft-SQL-Server
ms-sql-m??? 1434/tcp??? Microsoft-SQL-Monitor
ms-sql-m??? 1434/udp???? Microsoft-SQL-Monitor
wins????????? 1512/tcp???? Microsoft Windows Internet Name Service
wins?????????? 1512/udp???? Microsoft Windows Internet Name Service
l2tp????????? 1701/udp Layer Two Tunneling Protocol
?????????????? 1720/tcp
QICQ????????? 4000/udp
QICQ????????? 8000/udp
QQ????????????? 1080/UDP?????????? Socks 代理

《木马的常用连接端口》
木马类软件常用的连接端口，如tcp135、139、445、3389、5000等，我们称为敏感端口，另外“冰河”常用7626端口、“广外女生”常用6267端口。

《VPN使用端口：》
l2tp??? 1701/udp #Layer Two Tunneling Protocol
pptp??? 1723/tcp #Point-to-point tunnelling protocol

《远程控制软件pcAnywhere使用的端口》
它的“被控端”使用2个端口，数据端口（5631）和状态端口（5632）。

《BT下载使用的端口》
BT默认使用的端口是6881,6882,6883.....6889 的TCP连接 (每一个下载只使用一个端口，顺次分配)

《架设CS服务器》
指定游戏连接端口为27016。
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