Does Raspbian keep a security log file, and what is its location?

Question

I set up an OpenVPN server on my Raspberry Pi running Raspbian and am wondering if there is a log file of security events that I can look at. I'm curious because I want to know if there are login attempts via the now forwarded port that I should be looking at.

Answer 1

The Raspberry Pi OS uses systemd, so you will find logs in its journal. It also contains the logging from the OpenVPN server. Look at it to the current boot with:

rpi ~$ journalctl --boot=0 --pager-end

You can filter it to the service:

rpi ~$ journalctl --boot=0 --unit=openvpn.service