Get IP address for an portal user session

Hi all,

I have a requirement where i need to get the following:

-Client's IP address from where an user is connected to the portal.

-Client's IP address from where someone change a user password (also if the DB keeps user who made the changes will be usefull)

-Client´s IP address from where an user blocks his account

I have checked the NWA (WebAdminApp), and there is a session monitoring where i can see the active sessions on portals and the IP where the user is connected to. I just want to know the API used for that and some information that can guide me. I cant find an API to help me with this, if any of you know something or have any information, it will be usefull.

Regards,

MC