Cisco VPN connected, unable to access network

Situation:
User is connected to VPN.  Able to ping user computer from inside the network.  User is able to complete one ping request to internal server, others time out.
Things I did:
Disconnected and reconnected the VPN, no change.
Looking at IPs, I noticed what IPCONFIG gave me, and what the cisco adapter said were different.  Weird.
Anyway, to fix it, I ended the Cisco Anyconnect program, started it up and reconnected.  It pulled a new IP and I was able to access the network again.

This could have been a timing thing, but after I ended all the processes for Cisco and reconnected it, everything went back to normal.

Finding past logins / How to see when someone logged on

I was recently tasked with finding computer login times for multiple users.
The internet seemed to make it a daunting task, talking about needing to have things setup before hand to track.
Here's what I did:
I opened Event Viewer on my computer.
Right Click Event Viewer on the tree and select Connect to Another Computer
https://technet.microsoft.com/en-us/library/cc766438.aspx?f=255&MSPPError=-2147217396
Expand Windows Logs
Select Security logs
Filter Current Log for Event ID 4648
4624 is also a logon event, but there's way more of them.  4648 is less frequent, and coincided with first logon.