<metaname="keywords"content="Internet Fundamentals, Networking, Web Design, University, Coventry, CUC, 2020, CW2">
<metaname="description"content="An accessible, online resource for learning the fundamentals of the internet, web design, and networking. This was created for coursework for unit Z14IT 2020 by Joshua Killen Student ID: 9449871">
<pclass="frameContent">Port: 21<br><abbrtitle="File Transfer Protocol">FTP</abbr> is the protocol that handles transfering files from one device to another. It operates by considering one device as a server and the other as a client, thereby allowing the client to send and request files from the server<br><abbrclass="title"title="File Transfer Protocol over Secure Sockets Layer"><b>FTP/S</b></abbr><br>Port: 900<br>This protocol allows FTP over a secure encryption using <abbrtitle="Secure Sockets Layer">SSL</abbr>.<br><abbrclass="title"title="Secure File Transfer Protocol"><b>SFTP</b></abbr><br>This protocol allows FTP over a secure encryption using <abbrtitle="Secure Shell">SSH</abbr>. </p>
<pclass="frameContent">Port: 80<br><abbrtitle="HyperText Transfer Protocol">HTTP</abbr> is the protocol that handles the transfer of <abbrtitle="digital pages a user can read that directly reference other pages the user can look at">hypertext</abbr> between one or multiple systems. It is designed using the client-server principles; allowing a client to make a request after forming a connection with the server, at which point the server responds however it is programmed.<br><abbrclass="title"title="HyperText Transfer Protocol Secure"><b>HTTPS</b></abbr><br>Port: 443<br>This protocol allows HTTPs over a secure encryption using <abbrtitle="Secure Sockets Layer">SSL</abbr>.</p>
<pclass="frameContent">Ports: <abbrtitle="Non-Encrypted">25</abbr>,<abbrtitle="Secured with SSL">465</abbr>,<abbrtitle="Secured with StartTLS">587</abbr><br><abbrtitle="Simple Mail Transport Protocol">SMTP</abbr> is the protocol that handles the task of sending and then distributing E-Mail. It operates by seperating strings of text from the users message with code words that identify the purpose of each string and that the server can interpret. The messages can sometime pass through other devices other than it's destination. </p>
<pclass="frameContent">Port: 110<br><abbrtitle="Post Office Protocol 3">POP3</abbr> is the protocol that handles receiving e-mails that are unsecure. It operates by downloading messages to a local device and then removing it from the e-mail server. </p>
<pclass="frameContent">Ports: <abbrtitle="Non-Encrypted, or Secured with StartTLS">143</abbr>,<abbrtitle="Secured with SSL"> 993</abbr><br><abbrtitle="Internet Message Access Protocol 4">IMAP4</abbr> is the protocol that handles secure e-mail aquisition by accessing a remote server with a local client. </p>
<pclass="frameContent">Port: 22<br><abbrtitle="Secure Shell">SSH</abbr> is the protocol that secures a connection between a client and a server. This operates by creating a tunnel using cryptographic keys between the client and the server. This allows secure communication between the 2 devices. </p>
<pclass="frameContent">Port: 23<br>Telnet is a group of rules that systems follow when trying to establish a remote connection. It operates by allowing a two-way CLI connection to the remote device. </p>
<pclass="frameContent">Port: 161<br><abbrtitle="Simple Network Managment Protocol">SNMP</abbr> is the protocol that handles network monitoring. It operates by communicating with devices that "speak" SNMP using Get-Requests, allowing the user to be able to track any data values specified. </p>
<pclass="frameContent">Port: 219<br><abbrtitle="Address Resolution Protocol">ARP</abbr> is the protocol that handles mapping dynamic IP addresses to a physical MAC address. It operates on <abbrtitle ="where the MAC address is">Layer 2</abbr> and <abbrtitle="where the IP address is">Layer 3</abbr> by keeping a cache of unique IP address and their equivalent MAC address. If, when a request is made, the requested address is already in the cahce, it is just returned. Otherwise, it translates and finds the equivalent address.</p>
