Internet Protocols

Internet Protocols

1. TCP/IP

   • Transmission control protocol/internet protocol
     • organises how data packets are communicated
     • makes sure packets have the following
       • source - which computer the message came from
       • destination - where the message should go
       • packet sequence - the order the message data should be re- assembled
       • data - the data of the message
       • error check - the check to see that the message has been sent correctly

2. FTP

   • used to transfer large files
   • organising files on a web server for a website
   • you can have private access to an area on an FTP server where you can upload your files

3. HTTP

   • HyperText Transfer Protocol
     • allow users of the World Wide Web to exchange information found on web pages.
       • entering http:// in front of the address tells the browser to communicate over HTTP.

4. HTTPS

   • Hypertext Transfer Protocol Secure
     • HTTP on a connection encrypted by transport-layer security.
       • used to protect transmitted data from eavesdropping.
       • default protocol for conducting financial transactions on the web

5. TLS/SSL

   • Transport Layer Security
     • type of cryptographic protocol which provides secure communications over computer networks
       • use asymmetric encryption methods to perform authentication
       • exchange a symmetric key that is used to encrypt the data that passes over the network.
         • used in everyday networking operations like secure web browsing, e-mail, instant messaging, and VOIP

6. SSL

   • Secure Socket Layer
     • used for transmitting private documents and transferring data encrypted

7. POP

   • Post Office Protocol
     • used by email clients to retrieve e-mail from a remote email server
       • removes email from the server and downloads it to store on the client’s computer.
         • IMAP has largely replaced it.

8. Gopher

   • The Gopher protocol is a TCP/IP application layer protocol designed for distributing, searching, and retrieving documents over the Internet.