Server - IP History?

[jhoff80 94]

I'd love to see a history of all the IPs that have logged in over a certain period of time similar to what Google uses to prevent suspicious activity.

 

I had a Safari entry that I didn't recognize showing up in my dashboard (without showing anyone logged in as it), so I'd love to be able to check and see if the IP matches what I'd expect from the people I've given access to.