1.4. Describe common networked applications including web applications

In this section, I'll describe the different applications and services typically used in IP networks. The following protocols and applications are covered in this section:

  • Telnet

  • FTP

  • TFTP

  • NFS

  • SMTP

  • LPD

  • X Window

  • SNMP

  • DNS

  • DHCP/BootP

1.4.1. Telnet

Telnet is the chameleon of protocols—its specialty is terminal emulation. It allows a user on a remote client machine, called the Telnet client, to access the resources of another machine, the Telnet server. Telnet achieves this by pulling a fast one on the Telnet server and making the client machine appear as though it were a terminal directly attached to the local network. This projection is actually a software image—a virtual terminal that ...

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