Abdelrahman Anwar Elsaeed6565666666.pptx

Abdelrahman Anwar

1. Network Potocols Handbook Name : Abdelrahman Anwar Elsaeed

2. CONTENTS 01 03 02 Kerberos Post Office Protocol Simple Mail Transfer  Protocol

3. Kerberos PART 01

4. Kerberos Kerberos is a network authentication protocol. Kerberos is de_x0002_signed to provide strong authentication for client/server appli_x0002_cations by using secret-key cryptography. This is accomplished without relying on authentication by the host operating system, without basing trust on host addresses, without requiring physi_x0002_cal security of all the hosts on the network, and under the as_x0002_sumption that packets traveling along the network can be read, modified, and inserted at will.

5. Kerberos The Client/Server Authentication Exchange 1. Client to Kerberos KRB_AS_REQ 2. Kerberos to client KRB_AS_REP or KRB_ERROR The Ticket-Granting Service (TGS) Exchange 1. Client to Kerberos KRB_TGS_REQ 2. Kerberos to client KRB_TGS_REP or KRB_ERROR Related protocols RADIUS, TACACS+ Sponsor Source Kerberos is defined by MIT

6. Post Office Protocol PART 02

7. Post Office Protocol Optional POP3 Commands: APOP name digest valid in the AUTHORIZATION state TOP msg n valid in the TRANSACTION state UIDL [msg] POP3 Replies: +OK -ERR Related protocols SMTP, IMAP4, TCP, POP

8. Post Office Protocol Protocol Structure POP3 messages are ASCII messages sent between client and servers. POP3 Command Summary:

9. Simple mail transfer protocol PART 03

10. Simple mail transfer The title content The user can demonstrate on a projector or computer, or print the presentation and make it film The title content The title content The title content The user can demonstrate on a projector or computer, or print the presentation and make it film The user can demonstrate on a projector or computer, or print the presentation and make it film The user can demonstrate on a projector or computer, or print the presentation and make it film

11. Simple mail transfer protocol Simple Mail Transfer Protocol (SMTP) is a protocol designed to transfer electronic mail reliably and efficiently. SMTP is a mail service modeled on the FTP file transfer service. SMTP trans_x0002_fers mail messages between systems and provides notification regarding incoming mai

12. Simple mail transfer protocol Related protocols POP3, IMAP4, TCP, POP, FTP Protocol Structure SMTP commands are ASCII messages sent between SMTP hosts. Possible commands are as follows:

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