TCP/IP utilities

  • ftp implements the File Transfer Protocol client for the exchange of files to and from remote hosts.

  • The ssh client program implements a secure shell session to a remote host.

  • A web browser, such as Firefox, implements an http connection to a remote http server.

  • ping sends ICMP echo requests to a remote host to verify functionality.

  • dig obtains information from DNS servers.

  • traceroute attempts to display the route over which packets must travel to a remote host.

  • fwhois queries a whois database to determine the owner of a domain or IP address.

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