Explanation
Automatic Hide NAT rules are created by the administrator when they configure NAT for network objects or groups in the object properties. Automatic Hide NAT rules allow multiple private IP addresses to share a single public IP address when accessing external networks. Source Port Address Translation (PAT) is enabled by default for Automatic Hide NAT rules, which means that the Security Gateway assigns a unique source port number for each connection from the same source IP address. This allows the Security Gateway to keep track of the connections and translate the reply packets correctly.