
422 Chapter 10 • Requirements For Network Address Translation in Remote Access Networks
router does not alter the source port number and the destination
IP address of Host D.
6. The router also receives the packet from Host B and performs the
same tasks. It consults its NAT table and determines that IP
address 10.1.1.2 (Host B’s inside local address) has not been
mapped to a global address.
7. The router changes the source IP address of Host B to 192.168.1.1
also (the inside global address) and updates its NAT table. Note
that both Host A and Host B have been mapped to an inside global
address of 192.168.1.1.
8. Host D receives both packets and assumes ...