ftp no address associated with hostname

Ftp:file Transfer Protocol, Port: control: TCP/21; Data: TCP/20 or random high portFTP has two connections:Command connection (Control connection): TCP/21Data connection (open on Demand):Active mode: TCP/20 (FTP server Active connection

Talk about sockets, TCP/IP, HTTP, FTP, and network programming SubmitMy message Load inhave left a message 1 What's all this?Since it is a network transmission, involving the interaction between several systems, the first

1, about/etc/host, hostname and IP configuration file Hosts-the static table lookup for host name (host-Name query-still tables) Hosts file is a Linux system responsible for the rapid resolution of IP address and domain name files, in ASCII format

1. view the Host IP address resolved by the DNS host name Host CommandPurposeResolve a host name to an Internet address or an Internet address to a host name.SyntaxHost [-n [-a] [-c Class] [-d] [-r] [-t Type] [-v] [-w] [-z] Hostname | Address

This chapter describes functions for converting between names and numeric addresses: GetHostByName and gethostbyaddr are converted between host names and IP addresses , and Getservbyname and Getservbyport are Convert between the server name and the

CURL.1 manual page Name Curl-transfer a URL Summary curl[options] [URL ...] Describe CURL is a tool that transmits data to or from the server, which supports HTTP, HTTPS, Protocols such as FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP, or

Getaddrinfo () function details   1. Overview In IPv4, The gethostbyname () function is used to resolve the host name to the address. This function only supports IPv4 and does not allow the caller to specify any information of the desired address

Command:Ping Check network connectivityPing-f Dos attackArp-n viewing ARP tablesIfconfig, route, netstat network management commands (old)IP, SS, TC Network Management commands (new)DMESG Viewing kernel hardware loadingMTR View routesTraceroute

JAVA Network Programming The network can achieve resource sharing and communication, and java Network functions can be implemented using the java.net package. The java.net package provides a powerful foundation for the network. Java.net

Two-interface router with Nat 2514 router Current Configuration: ! Version 12.0: Service timestamps debug uptime Service timestamps log uptime No service password-Encryption ! Hostname Horton ! Enable secret 5 $1 $ gwrz $ YS/82