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The TCP/IP Guide 9 TCP/IP Protocol Suite and Architecture |
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TCP/IP Protocols
(Page 4 of 4)
Application Layer (OSI Layer 5/6/7) Protocols
As discussed in the topic on the TCP/IP model, in TCP/IP the single application layer covers the equivalent of OSI layers 5, 6 and 7. The application protocols covered in this Guide are shown in Table 23.
Protocol Name |
Protocol Abbr. |
Description |
DNS |
Provides the ability to refer to IP devices using names instead of just numerical IP addresses. Allows machines to resolve these names into their corresponding IP addresses. |
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NFS |
Allows files to be shared seamlessly across TCP/IP networks. |
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BOOTP |
Developed to address some of the issues with RARP and used in a similar manner: to allow the configuration of a TCP/IP device at startup. Generally superseded by DHCP. |
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DHCP |
A complete protocol for configuring TCP/IP devices and managing IP addresses. The successor to RARP and BOOTP, it includes numerous features and capabilities. |
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SNMP |
A full-featured protocol for remote management of networks and devices. |
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RMON |
A diagnostic “protocol” (really a part of SNMP) used for remote monitoring of network devices. |
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FTP, TFTP |
Protocols designed to permit the transfer of all types of files from one device to another. |
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RFC 822, Multipurpose Internet Mail Extensions, Simple Mail Transfer Protocol, Post Office Protocol, Internet Message Access Protocol |
RFC 822, MIME, SMTP, POP, IMAP |
Protocols that define the formatting, delivery and storage of electronic mail messages on TCP/IP networks. |
NNTP |
Enables the operation of the Usenet online community by transferring Usenet news messages between hosts. |
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HTTP |
Transfers hypertext documents between hosts; implements the World Wide Web. |
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Gopher |
An older document retrieval protocol, now largely replaced by the World Wide Web. |
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Telnet |
Allows a user on one machine to establish a remote terminal session on another. |
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— |
Permit commands and operations on one machine to be performed on another. |
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IRC |
Allows real-time chat between TCP/IP users. |
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— |
A collection of software tools that allows administrators to manage, configure and troubleshoot TCP/IP internetworks. |
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