网络端口范围分类

端口分配

端口号	分配
0-1023	Well-Known (a.k.a. ‘system’)	系统预留
1024-49151	Registered (a.k.a. ‘user’)	用户分配
49152-65535	Dynamic/Private	动态和私有

 

• The Well Known Ports are those in the range 0–1023. On Unix-like operating systems, opening a port in this range to receive incoming connections requires administrative privileges or possessing of CAP_NET_BIND_SERVICE capability.
• The Registered Ports are those in the range 1024–49151.
• The Dynamic and/or Private Ports are those in the range 49152–65535. Randomly chosen port numbers out of this range are called ephemeral ports. These ports are not permanently assigned to any publicly defined application.

IANA does not enforce this; it is simply a set of recommended uses. Sometimes ports may be used for different applications or protocols than their official IANA designation. This misuse may be, for example, by a Trojan horse, or alternatively by a commonly used program that didn't get an IANA registered port or port range.

Well-Known port:On some systems, use of these ports requires privileged access.

 

看过上面的文字之后，自己创建web application的时候选择端口号就要有个数罗。