journalctl
Jul 03 21:33:26 yourUbuntuServer.com systemd[1]: Stopping OpenBSD Secure Shell
server...
Jul 03 21:33:26 yourUbuntuServer.com sshd[1719]: Received signal 15;
terminating.
Jul 03 21:33:26 yourUbuntuServer.com systemd[1]: Stopped OpenBSD Secure Shell
server.
Jul 03 21:33:26
Public bug reported:
1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
-> About Ubuntu
lsb_release -rd
Description:Ubuntu 18.04.4 LTS
Release:18.04
2) The version of the package you are using, via 'apt-cache policy
pkgname' or by checking in
apt-cache policy