Some network protocols

Description of some network protocols DICT: a dictionary server protocol. Dict servers and clients use TCP port 2628 FILE: Mainly used to access files on local computers, just like opening a file in Windows Explorer. FTP: (File Transfer Protocol, FTP) is the Protocol for transferring files from two computers on the TCP/IP network. FTP is one of the earliest protocols used on the TCP/IP network and the INTERNET, it belongs to the application layer of the network protocol group. The FTP client can send commands to the server to download files, upload files, and create or change directories on the server. FTPS: A Multi-transmission protocol, equivalent to encrypted FTP. Gopher: a well-known information search system on the Internet, which organizes files on the Internet into some index, so that users can easily take one from the Internet to another. Before the emergence of WWW, Gopher was the most important information retrieval tool on the Internet, and the Gopher site was also the most important site. However, after the emergence of WWW, Gopher lost its glory. Now it is basically outdated, and people seldom use it again. HTTP: a data transfer protocol that defines the rules for communication between browsers and web servers and that transmits World Wide Web documents over the Internet. HTTPS :( Full name: Hypertext Transfer Protocol over Secure Socket Layer) is an HTTP channel targeted at security. It is simply a Secure version of HTTP. That is, the SSL layer is added under HTTP. The Security Foundation of HTTPS is SSL, so the detailed content of encryption requires SSL. IMAP: (Internet Mail Access Protocol (Interactive Mail Access Protocol) is a Mail Access Protocol developed by Stanford University in 1986. Its main function is that the mail client (such as MS Outlook Express) can use this Protocol to obtain mail information from the mail server, download mail, and so on. IMAPS: provides SSL-encrypted IMAP Protocol LDAP: it is a Lightweight Directory Access Protocol. Its full name is Lightweight Directory Access Protocol, which is generally referred to as LDAP. LDAPS: provides SSL-encrypted LDAP Protocol POP3 (Post Office Protocol 3), which is the 3rd version of the Post Office Protocol, it is a protocol that specifies how a personal computer connects to the mail server on the Internet to send and receive mail. POP3S: provides SSL-encrypted POP3 Protocol RTMP full name Routing Table Maintenance Protocol (Route Selection Table Maintenance Protocol) in the AppleTalk Protocol group, Route Selection Table Maintenance Protocol (RTMP, Routing Table Protocol) it is a transport layer protocol that establishes and maintains a route selection table in the AppleTalk router. RTSP (Real Time Streaming Protocol) is an application layer Protocol in the TCP/IP Protocol system. It is an ietf rfc standard submitted by Columbia University, Netscape and RealNetworks. This Protocol defines how one-to-multiple applications can effectively transmit multimedia data over an IP network. SCP (Secure Copy) is a Secure method for transferring files between remote (local and local, local and remote, remote) computers. It is based on the SSH protocol. SFTP: Short for Secure File Transfer Protocol, Secure File Transfer Protocol. It provides a secure encryption method for transferring files. Sftp has almost the same syntax and functions as ftp. SFTP is a part of SSH and is a secure method for transferring files to the Blogger server. SMTP (Simple Mail Transfer Protocol) is a Simple Mail Transfer Protocol. It is a set of rules used to send Mail from the source address to the destination address, which controls the Transfer mode of Mail. The SMTP protocol belongs to the TCP/IP protocol family, which helps each computer locate the next destination when sending or transferring letters. SMTPS: the encrypted SMTP Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main method for the Internet remote login service. It provides users with the ability to complete remote host work on local computers. TFTP is a simple protocol for transferring files. It is implemented based on UDP, but we cannot determine that some TFTP protocols are based on other transmission protocols. This protocol is designed to transfer small files. Therefore, it does not have many FTP functions. It can only obtain or write files from the file server, but cannot list directories, and does not perform authentication. It transfers 8-bit data.