This led the hotel chain to identify multiple issues of varying severity and address these customer relationship management issues prior to launching the new site at the start of 2009.

This example command appends a rule at the end of the INPUT chain that specifies packets coming from source address 205.168.0.1 to be ACCEPTed.

The invention only learns and transmits MAC address in local network, to limit the number of MAC address, save MAC list resource of chain layer, and improve network property.