331
9
rOuting and remOte
aCCess serviCe
Objectives
• Understand Routing.
•
Understand Network Address Translation (NAT).
•
Gain Knowledge of Routing and Remote Access Service (RRAS).
•
Congure an RRAS router.
9.1 Introduction
As mentioned earlier, TCP/IP and routers are two key technologies for today’s
Internet. With routers, various types of networks can be linked together to form
the Internet. During a routing process, a router can nd the shortest path to a
destination network. e router can identify a network host with a destination IP
address and knows where to nd the destination network host. It can also deliver
data packets from one network to another network where the data packets may be
framed dierently. erefore, the router is consi