Slide 1 1 Lecture #3 Electronic Mail Protocols HAIT Summer 2005 Shimrit Tzur-David Slide 2 2 Message Transfer The message transfer system is concerned with relaying messages…
Electronic Mail Three major components: user agents mail servers simple mail transfer protocol: SMTP User Agent (Email Reader) a.k.a. “mail reader” composing, editing,…
Electronic Mail Electronic Mail Three major components: user agents mail servers simple mail transfer protocol: SMTP User Agent a.k.a. âmail readerâ composing, editing,…
Using Cryptography for Network Security Common problems: Authentication - A and B want to prove their identities to one another Key-distribution - A and B want to agree on…
CS1652 September 10th, 2013 The slides are adapted from the publisher’s material All material copyright 1996-2009 J.F Kurose and K.W. Ross, All Rights Reserved Jack Lange…
FTP, Mail and DNS protocols FTP, Mail and DNS protocols FTP: the file transfer protocol Application Layer 2-2 file transfer FTP server FTP user interface FTP client local…
Chapter 2 outline 2.1 Principles of app layer protocols 2.2 Web and HTTP 2.3 FTP 2.4 Electronic Mail 2.5 DNS 2.6 Socket programming with TCP 2.7 Socket programming with UDP…
Cryptography Cryptography What is Public-key encryption? Encryption is the key to information security The main idea- by using only public information, a sender can lock…