Motivation
Private VS Public   Can we have access?
IMPOSSIBLE!!
Public Access:
AOL, DSL,
Cable Modem, etc
Private Network:
192.168.5.0/24
 Machines on Private Networks are not routable
 In other words, you won’t be able to directly log
onto machines on private networks through public
access such as AOL or DSL
 Why? That’s how the internet is designed