any log access history/command history for winscp to Redhat?

Hi, I am a SA for a small startup.

Recently I need to find out who accessed our linux server and did what. Is there a way on Redhat LInux server a log for me to check?

This is a server-side job to do. Consider asking on https://superuser.com/ or similar site. If you do, please post a link here. Thanks.