I am going to buy a AIR-AP521G-x-K9 with IOS software which is a stand alone access point.However, later on I may buy a Cisco 526 Wireless Express Mobility controller in order to expand my wireless network.As I know at that moment I need to buy light...

here is one of the entry :*Oct 22 17:30:13.537: %SEC-6-IPACCESSLOGP: list 115 permitted tcp 213.123.134.23(0) -> 51.233.23.33(0), 62 packetsI would like to know if the " (0) " is representing the tcp port number ?Thanks for help.