The Outgoing policy is a packet filter policy that is automatically added to your XTM device configuration when you run the Quick Setup Wizard to set up your device and create a basic device configuration file. The Outgoing policy allows all TCP and UDP connections from any trusted or optional source on your network to any external network. Because it is a packet filter policy, not a proxy policy, the Outgoing policy does not filter content when it examines the traffic through your XTM device.
If you remove the Outgoing policy from your device configuration file, you must add policies to your configuration that allow outbound traffic. You can either add a separate policy for each type of traffic that you want to allow out through your firewall, or you can add the TCP-UDP packet filter or TCP-UDP-proxy policy.
For more information about the TCP-UDP proxy, see About the TCP-UDP-Proxy.
About the TCP-UDP-Proxy
About the Firewall Policies page
About Policy Precedence
Add Policies to Your Configuration