可以看出普通用户只能监听1024及1024以后的端口,对于UDP端口也是如此,同样,对于65535号端口也是可以监听的, 另外:对于0号端口也是一个特殊的端口,通过文档看到 TCP/UDP 的0号端口都是Reserved 如果使用root用户去监听TCP或者UDP的0号端口,都会收到报错:Ncat: Invalid port number "0". QUITTING. 尊重别人的劳动成果 ...
总结来说，TCP和UDP可以使用相同的端口号，但不会同时在相同的IP地址和端口号上使用，因为它们会分别建...
With UDP, client port selection depends on the application and may be incremental, fixed to a nonsensical value, or fixed equal to the server port. 端口描述状态 1025/tcp NFS-or-IIS 非官方 1026/tcp Often utilized by Microsoft DCOM services 非官方 1029/tcp Often utilized by Microsoft DCOM ...
The DHCP employs a connectionless service model, using the User Datagram Protocol (UDP). It is implemented with two UDP port numbers for its operations which are the same as for the BOOTP protocol. UDP port number 67 is the destination port of a...
UDP 传送的数据单位协议是 UDP 报文(用户数据报)。 传输层:端口号导向 网络层:IP地址导向 数据链路层:Mac地址导向 TCP报文段分析 TCP报文段分为首部和数据部分 首部又分为固定部分和选项(变长部分) TCP报文首部的设计是经过一些简单模型改进演变为适合实际应用的处理模型,报文的设计考虑到并满足模型...
With UDP, client port selection depends on the application and may be incremental, fixed to a nonsensical value, or fixed equal to the server port. 端口描述状态 1025/tcp NFS-or-IIS 非官方 1026/tcp Often utilized by Microsoft DCOM services 非官方 1029/tcp Often utilized by Microsoft DCOM...
•162 UDP port for sending SNMP traps. This port can be used when the network is configured to capture trap information. Many SNMP Management utilities can be configured to capture traps. The Jetdirect's SNMP trap destination IP address and this port number can be configured using Web Jetadmi...
1、TCP是面向链接的,虽然说网络的不安全不稳定特性决定了多少次握手都不能保证连接的可靠性,但TCP的三次握手在最低限度上(实际上也很大程度上保证了)保证了连接的可靠性;而UDP不是面向连接的,UDP传送数据前并不与对方建立连接,对接收到的数据也不发送确认信号,发送端不知道数据是否会正确接收,当然也不用重发,所...
7005/tcp,udp 7006/tcp,udp 7010/tcp 7025/tcp 7047/tcp 7171/tcp 7306/tcp 7307/tcp X11- used between an X client and server over the network X11- used between an X client and server over the network Default port forBMC SoftwareCONTROL-M/Server - Socket Port number used for communication...
563/TCP,UDP NNTP protocol over TLS/SSL (NNTPS) 587/TCP email message submission(SMTP,RFC 2476) 591/TCP FileMaker 6.0(及之后版本)网络共享(HTTP 的替代,见 80 端口) 593/TCP,UDP HTTP RPC Ep Map(RPC over HTTP, often used by DCOM services and Microsoft Exchange Server) 604/TCP TUNNEL 631/...