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Internet Protocol Suite
is very similar to the OSI model, but consists of only four layers. The application layer, the transport layer, the internet layer, and the link layer.
FTP (File Transfer Protocol)
A standard protocol used to transfer files from one host to another over a network.
BOOTP (Bootstrap Protocol)
is a protocol that is used by the network to retrieve an IP address from a configuration server.
TFTP (Trivial File Transfer Protocol)
a simple file transfer protocol used to transfer boot files or configuration files between local machines.
DNS (Domain Name System)
an arranged distributed naming system for resources connected to the internet or a private network.
HTTP (Hypertext Transfer Protocol)
is the foundation of data communication for the World Wide Web. It is the protocol used to exchange or transfer hypertext.
TLS/SSL (Transport Layer Security/Secure Socket Layer)
protocols that are used to provide security over the internet.
VoIP (Voice over Internet Protocol)
a protocol used to deliver voice communications and provide multimedia sessions over IP networks.
SSH (Secure Shell)
a network protocol used for secure data communication, and remote command execution, command-line login, and other secure network services.
POP3 (Post Office Protocol)
protocol used by local e-mail clients to retrieve e-mail from a remote server. The 3 stands for the third and latest version of the post office protocol.
IMAP4 (Internet Message Access Protocol)
is a protocol used for storage and retrieval of e-mail. The 4 stands for the fourth and latest version of the internet message access protocol.
NTP (Network Time Protocol)
protocol used for clock synchronization between computer systems.
protocol used on the internet or LANs to provide two way text communication using a virtual terminal connection, like a command-line.
SMTP (Simple Mail Transfer Protocol)
a protocol used for sending and receiving e-mail and is the current standard for e-mail transmission.
SNMP (Simple Network Management Protocol)
protocol used to manage devices on IP networks. Example: Routers, switches, hubs, etc.
TCP (Transmission Control Protocol)
most commonly used protocol and the core of the Internet Protocol Suite. It provides reliable and ordered streams of data communication through computers connected to a LAN, intranet, or public internet.
UDP (User Datagram Protocol)
protocol that allows computers to send messages to other hosts on an IP network without prior communications to set up special transmission on channels of data parts.
ICMP (Internet Control Message Protocol)
one of the main suite protocols used to send error messages usually to alert that a service is unavailable or that no connection could be reached.
IGMP (Internet Group Management Protocol)
protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships.
ARP (Address Resolution Protocol)
converts an IP address into a more physical address, like a MAC address or an Ethernet Address.