常用网络通讯端口

Protocol Type	Port	Description
UDP	20	FTP data transfer
TCP	21	FTP commands
TCP	22	SSH
TCP	23	Telnet
UDP	53	DNS Queries
TCP	53	DNS Zone transfers
TCP	80	HTTP
TCP	110	POP3
TCP	111	Monitor Solaris
TCP	135	Microsoft Remote Procedure Call (RPC) service
UDP	137	NetBios Name Service
UDP	138	NetBios datagram,used by Windows(and services on UNIX like SAMBA)
TCP	139	Monitor Windows
TCP	139	NetBios Session Service used for resource sharing on Windows
UDP	161	SNMP for agent
UDP	162	SNMP for manager
TCP	443	HTTPS
TCP	445	Microsoft-DS Service used for resource sharing on Windows
TCP/UDP	1521	Oracle
TCP	3389	Microsoft Remote Desktop sessions use
TCP	8888	SiteScope
TCP	50000	DB2 on Windows
TCP	50500	LoadRunner Controller communicates to LoadRunner Generator/Agent （Windows ）
TCP	54345	LoadRunner Generator/Agent communicates to LoadRunner Controller （Windows ）
TCP	60000	DB2 on Unix