Client-Server Applications

IMAP4 (Internet Message Access Protocol, version 4)

-Internet Message Access Protocol (IMAP) is a standard protocol for accessing email on a remote server from a local client. -IMAP is an application layer Internet Protocol using the underlying transport layer protocols to establish host-to-host communication services for applications. This allows the use of a remote mail server. -port address for IMAP is 143. -The IMAP architecture enables users to send and receive emails through a remote server, without support from a particular device. -This type of email access is ideal for travelers receiving or answering emails from their home desktop or office computer.

POP3 (Post Office Protocol version 3)

-Post Office Protocol is the primary protocol behind email communication. -POP works through a supporting email software client that integrates POP for connecting to the remote email server and downloading email messages to the recipient's computer machine. -POP uses the TCP/IP protocol stack for network connection and works with Simple Mail Transfer Protocol (SMTP) for end-to-end email communication, where POP pulls messages and SMTP pushes them to the server.

SSH (Secure Shell)

-Secure Shell (SSH) is a cryptographic protocol and interface for executing network services, shell services and secure network communication with a remote computer. -Secure Shell enables two remotely connected users to perform network communication and other services on top of an unsecured network. -It was initially a Unix-based command but is now supported on Windows-based systems as well. -SSH uses AES, IDEA and Blowfish as the encryption algorithms. -It is also considered a secure replacement to the Telnet, RSH and Rexec protocols.

SSL

-Secure Sockets Layer (SSL) is a standard protocol used for the secure transmission of documents over a network. -Developed by Netscape, SSL technology creates a secure link between a Web server and browser to ensure private and integral data transmission. -SSL uses Transport Control Protocol (TCP) for communication.

SMTP (Simple Mail Transfer Protocol)

-TCP 25 -Simple Mail Transfer Protocol (SMTP) is the standard protocol for email services on a TCP/IP network. -SMTP is an application-layer protocol that enables the transmission and delivery of email over the Internet. -----SMTP is created and maintained by the Internet Engineering Task Force (IETF).

TLS

-TLS primarily enables secure Web browsing, applications access, data transfer and most Internet-based communication. -It prevents the transmitted/transported data from being eavesdropped or tampered. -TLS is used to secure Web browsers, Web servers, VPNs, database servers and more.

Telnet

-port 23 - administrator or other user and remote in to control a computer remotely -transmissions are not encrypted

client-server applications

An application that has two components. The client software requests data from the server software on the same or another computer.

HTTPS (Hypertext Transfer Protocol Secure)

An encrypted version of HTTP. It uses port 443.

FTP (File Transfer Protocol)

File Transfer Protocol (FTP) is a client/server protocol used for transferring files to or exchanging files with a host computer. It may be authenticated with user names and passwords

HTTP (Hypertext Transfer Protocol)

HyperText Transfer Protocol (HTTP) is an application-layer protocol used primarily on the World Wide Web. HTTP uses a client-server model where the web browser is the client and communicates with the webserver that hosts the website. The browser uses HTTP, which is carried over TCP/IP to communicate to the server and retrieve Web content for the user.

Protocols

Network protocols are formal standards and policies comprised of rules, procedures and formats that define communication between two or more devices over a network.

Remote Desktop Services

Remote Desktop Services centrally controls which remote desktop hosts can be accessed, who can access them, and device redirection. RDS includes the following benefits: -The ability to run an entire desktop or application on centralized servers -The provisions of an application window or entire desktop as well as the integration of local and remote applications and programs -Management of applications, virtual machine-based desktops, or session-based desktops on centralized servers -The ability to secure remote access connections without having to establish a VPN connection

Network Services

The resources a network makes available to its users, including applications and the data provided by these applications.

TCP/IP

Transmission Control Protocol/Internet Protocol (TCP/IP) is the language a computer uses to access the internet. It consists of a suite of protocols designed to establish a network of networks to provide a host with access to the internet.

web service

a web server serves a web page to clients. Primary protocol used by web servers and browsers (clients) is HTTP (hypertext transfer protocol)

remote application

application that is installed and executed on a server and is presented to a user working at a client computer