Networking

TCP/IP Protocol Suite Summary

The details of each of the protocols discussed in the preceding sections are summarized in Table 6.

Table 6 TCP/IP Protocol Suite Summary

Protocol

Full Name

Description

OSI Layer

IP

Internet Protocol

Connectionless protocol used for moving data around a network.

Network

TCP

Transmission Control Protocol

Connection-oriented protocol that offers flow control, sequencing, and retransmission of dropped packets.

Transport

UDP

User Datagram Protocol

Connectionless alternative to TCP that is used for applications that do not require the functions offered by TCP.

Transport

FTP

File Transfer Protocol

Protocol for uploading and down-loading files to and from a remote host; also accommodates basic file-management tasks.

Application

SFTP

Secure File Transfer Protocol

Protocol that performs a similar function to FTP, but provides more secure authentication and encryption mechanisms.

Application

TFTP

Trivial File Transfer Protocol

File transfer protocol that does not have the security or error-checking capabilities of FTP; uses UDP as a transport protocol and is therefore connectionless.

Application

SMTP

Simple Mail Transfer Protocol

Mechanism for transporting email across networks.

Application

HTTP

Hypertext Transfer Protocol

Protocol for retrieving files from a Web server.

Application

HTTPS

Hypertext Transfer Protocol Secure

Secure protocol for retrieving files from a Web server.

Application

POP3/IMAP4

Post Office Protocol version 3/Internet Message Access Protocol version 4

Used for retrieving email from a server on which the mail is stored.

Application

Telnet

Telnet

Allows sessions to be opened on a remote host.

Application

SSH

Secure Shell

Like Telnet, allows sessions to be opened on a remote host, but provides authentication and encryption capabilities.

Application

ICMP

Internet Control Message Protocol

Used for error reporting, flow control, and route testing.

Network

ARP

Address Resolution Protocol

Resolves IP addresses to MAC addresses, to enable communication between devices.

Network

RARP

Reverse Address Resolution Protocol

Resolves MAC addresses to IP addresses.

Network

NTP

Network Time Protocol

Used to communicate time synchronization information between devices.

Application

NNTP

Network News Transport Protocol

Protocol used for accessing and downloading messages from Internet-based newsgroups.

Application

SCP

Secure Copy Protocol

Protocol that uses Secure Shell (SSH) technology to provide a safe way to copy files between systems.

Application

LDAP

Lightweight Directory Access Protocol

Provides a mechanism to access directory services systems

Application

IGMP

Internet Group Management Protocol

Protocol used for communication between devices in a multicast group.

Network

LPR

Line Printer Remote

Provides a mechanism to send printing tasks to a print server.

Application


by BrainBellupdated
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