Response Traffic is blocked by Firepower

[rebazsalih]

Dears

I have allowed to access a websever on HTTPS port only

the problem is  when a client tries to access HTTPS , firepower will allow client to access webserver and in event viewer will show ClientIP:sourceport to WebServer:443 allowed 

but the problem is some traffic from webserver back to the clients is blocked and it shows as below in event viewer

WebServer:443 to ClientIP:sourceport Blocked

I know firepower is stat full firewall and allow traffic back and forth from client to server  but I don't know why it blocks some traffic from server when it tries to response to client

[balaji.bandi]

please give us some information web server inside or outside.

[rebazsalih]

Hello Balaji

The webserver is located in DMZ in our Network(a Public IP is NATTed to the Webserver IP), when some one tries to reach it from Outside (Public) this issue will occur