chapter 21 network basics for digital investigators ©2011 eoghan casey. published by elsevier inc....

Chapter 21

Network Basics for Digital Investigators

©2011 Eoghan Casey. Published by Elsevier Inc. All rights reserved.

Figure 1.1

Copyright © 2011 Academic Press Inc.©2011 Eoghan Casey. Published by Elsevier Inc. All rights reserved.

FIGURE 21.1 Map of ARPANET.

Figure 1.1


FIGURE 21.2 Timeline of key events.

Figure 1.1


FIGURE 21.3 Depiction of hosts with NICs connected to a router to form a network.

Figure 1.1


FIGURE 21.4 Hosts connected to a central hub (star typology).

Figure 1.1


FIGURE 21.5 Normal FDDI communication versus backup communication when a host is down (double-ring typology).

Figure 1.1


FIGURE 21.6 Wireless IEEE 802.11 network with a PDA and PC connected to an AP. Also shown is the AP connected to the Internet.

Figure 1.1


FIGURE 21.7 Dissimilar networks connected using a common language to form an internet.

Figure 1.1


FIGURE 21.8 Barbara the Bookie’s Network.

Figure 1.1


FIGURE 21.9 Conceptual depiction of TCP/IP with arrows indicating communication between modules.

Figure 1.1


FIGURE 21.10 A simplified depiction of the Open System Interconnection layers showing where TCP/IP fits.

Figure 1.1


FIGURE 21.11 A conceptual representation of packets in network traffic relating to a single flow being extracted and reconstituted to obtain the data they carry (Casey, 2004).

Figure 1.1


FIGURE 21.12 Graphical synopsis of the OSI reference model.

Figure 1.1


FIGURE 21.13 How a Web browser accesses the Internet as seen through the OSI model.

Figure 1.1


FIGURE 21.14 NetIntercept (http://www.sandstorm.com) showing components of a Web page both in OSI layers and content recovered from network traffic.

http://www.sandstorm.com/

chapter 21 network basics for digital investigators ©2011 eoghan casey. published by elsevier inc....

Documents

academic press

network traffic

network basics

bookies network

osi layers

osi model

depiction of hosts

conceptual depiction