the conversation tab

the conversation tab

hi ...
i have 2911 router

interface GigabitEthernet0/0
 ip address *******************************
 ip nbar protocol-discovery
 ip flow ingress
 ip flow egress
 ip nat outside
 ip virtual-reassembly in
 load-interval 30
 duplex auto
 speed auto
 crypto map s2s
!        
interface GigabitEthernet0/1
 ip address ****************************** secondary
 ip address ******************************
 ip nbar protocol-discovery
 ip flow ingress
 ip flow egress
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto
 arp timeout 7200
!        
-------------------------

my problem is :

1-  in the internet facing interface destination tab (IN) shows the public ip of the interface as a destination IP address   with a large data traffic , and as a reflection the local lan interface destination (OUT) shows the public ip of the interfacing interface as a destination (OUT)  ? i cant determine what client receive this data ?

2- in conversation tab all the destination (OUT) of the lan interface shows the public ip address of the internet facing interface !!

can any one help me with that ?