Thanks Andre For the Response,
, yes i am trying to get 2 different physical interfaces (in the same security zone) to communicate with each other. in my case these 2 interface Belong to inside LAN , i can achieve communication by creating an Access policy in which keeping source and destination zone is same ... but i still not understand the significance of crating a security Zone in FTD , i am assuming if i have put 2 interface in same zone that should communicate with each other without explicitly create a rule in ACL policy ..
and also trying to understand what that statement means " same-security-traffic is not applicable on FTD. Traffic between FTD interfaces (inter) and hairpinning (intra) is allowed by default "