User's Manual

20
Click one of the traffic graphs above and then a screen will be shown as follows:
The figure above displays MRTG traffic monitoring, which generate traffic graphs on a
basis of days, weeks, months, and years. In addition, it separately presents a graph of
Max In / Out, Average In / Out, and Current In / Out, offering administrators with
referential data to conduct system tuning and improve network performance.
6.8 NAT
NAT (Network Address Translation) allows you to define a virtual IP address in a private
network whenever you need to do so, without the hassle of applying for a realistic one.
Each PC in a private network communicates with each other via a private (i.e., virtual) IP
address. When you want a private PC to communicate with the public Internet, you can
use a NAT-enabled device (such as routers or the host itself) to translate the private IP
address into a legal IP address (i.e., an officially applied IP address) to conduct
communications. NAT can resolve most of the problems of moving private data