How Sophos XG Processing Packet

Question

Hi all, 
 Is there a documentation that explains how processing a packet that arrives on an interface of the Sophos XG? 
 In particular, I would be interested to understand what module(NAT,FastPath,Policy Security,Ipsec VPN ecc) and in what order are executed when a packet arrives on an interface of the firewall. I search this type of documentation on community and on google but i haven't find nothing. 
 
 Thanks to all who can help me,

sachingurung · Accepted Answer

Hi Bruno, 
 Interesting question! 
 Please refer the screenshot to understand the Packet Flow Architecture in XG. 
 
 Thanks 
 Sachin Gurung