Chapter 31. Highlighter’s Index

TCP/IP Design

TCP/IP Basics

Named for protocols: Transport Control Protocol and Internet Protocol
Default protocol for Windows 2000
Routable
Uses logical (IP) addresses
New Windows 2000 features: Enhanced PPTP, L2TP, and IPSec

IP Address Classes

Class

Network /Host Bytes

Number of Networks

Number of Hosts per Network

A

1/3

126

16,777,214

B

2/2

16,382

65,534

C

3/1

2,097,150

254

Subnet Masking

Subdivides a network by using bits from host address
Number of subnets available: 2^(number of bits) -2

Class

Default Subnet Mask

A

255.0.0.0

B

255.255.0.0

C

255.255.255.0

Private IP Address Ranges

Address Class

Starting Address

Ending Address

A

10.0.0.0

10.255.255.255

B

169.254.0.1

169.254.255.254

C

172.16.0.0

172.31.255.255

C

192.168.0.0

192.168.255.255

IP Filtering

Blocks access to unauthorized ports or protocols
Enabled by default
Can filter TCP ports, UDP ports, or protocols
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