The Internet Encyclopedia (Volume 3)

P1: IML/FFX P2: IML/FFX QC: IML/FFX T1: IML

WL040C-21 WL040/Bidgolio-Vol I WL040-Sample.cls August 13, 2003 17:16 Char Count= 0

264 SECURESOCKETSLAYER(SSL)

Client Intermediate Server

Node

Intermediate

Node

Peer-to-peer protocol (7th layer)

Peer-to-peer protocol (6th layer)

Peer-to-peer protocol (5th layer)

Peer-to-peer protocol (4th layer)

Physical

Application

Presentation

Session

Transport

Network

Data Link

Physical

Data Link

3rd

2nd

1st

3rd

2nd

1st

3rd

2nd

1st

Application

Presentation

Session

Transport

Network

Data Link

Physical

Network

Physical

Data Link

Network

Figure 2: Messaging delivery using OSI model.

SMTP-Simple mail transfer protocol

TELNET-Remote access program

SNMP-Simple network management protocol

NFS-Network file system

RPC-Remote procedure call

FTP-File transfer protocol

TFTP-Trivial file transfer protocol

HTTP-Hypertext transfer protocol

TCP-Transmission control protocol

UDP-User datagram protocol

ICMP-Internet control message protocol

ARP-Address resolution

Application

Figure 3: The OSI model and the TCP/IP protocol.