Communication protocols

Communication protocols

1. VoIP - Voice over Internet Protocol

   • Transmit audio messages
   • Free voice calls - computer to computer
   • Webcam enables video calls

2. Emails

   • POP or POP3 - Post Office Protocol
     • Emails downloaded from server to be read offline
   • IMAP - Internet Message Access Protocol
     • Email remains on mail server & can be read anywhere with an Internet connection
   • SMTP - Simple Mail Transfer Protocol
     • Email transfer between client and server

3. HTTP - HyperText Transfer Protocol

   • Client (browser) uses HTTP to access web pages via the web server

4. HTTPS - HyperText Transfer Protocol over SSL (Secure Sockets Layer)

   • Secure access as data is encrypted
     • Need keys to unlock data
   • Digital Certificates confirm website is real
     • Padlock icon
     • Security icon