behave-05----Page:7
1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17 

Req # 4 - Port Reservation
NAT’s TCP Port space is shared by 2 functions:
(a) Router’s local end-host functionality
(b) Router’s NAT functionality

NAT MUST NOT use a single TCP port for both NAT’d sessions and local application sessions at the same time.
Recommendation: NAT implementers SHOULD set aside port-blocks for end-host functionality vs. NAT functionality.


PPT Version