The 4.0 Sensor does not provide the capability to generate email alerts. That functionality is provided by the IDS SM.
I believe that the basic port sweep signatures are on by default. You can configure these signatures by logging into IDM and going to the ConfigurationSensing EngineVirtual Sensor ConfigurationSignature Configuration Mode page and selecting the Reconnaissance Signature Group. You will find the port scan signatures within this group.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...