One case when I needed the search box was when I got a strange log on the server, with one IP.
I went to the audit and I had to scroll through hundreds of IP to find the one I am looking for. Instead, a search box, paste and click and done.
For partial username searchs, partial IPs, or even multiple actions (install and login at the same time) the box search is a nice to have thing.
We can use filtering now. Addtional search box for this would be good to have too.
The filters on pages like audit trail and traffic could be a little more user friendly. Instead of scrolling through 800 entries trying to find a specific user, it would be extremely useful to be able to paste in details or at least start typing to filter accordingly.