[root@elk3 ~]# journalctl | grep -i ssh
12月 01 21:43:36 elk3 systemd[1]: Starting OpenSSH server daemon...
12月 01 21:43:36 elk3 sshd[860]: Server listening on 0.0.0.0 port 22.
12月 01 21:43:36 elk3 sshd[860]: Server listening on :: port 22.
12月 01 21:43:36 elk3 systemd[1]: Started OpenSSH server daemon.
12月 01 21:44:19 elk3 sshd[1106]: Accepted password for root from 192.168.122.1 port 49316 ssh2
12月 01 21:44:19 elk3 sshd[1106]: pam_unix(sshd:session): session opened for user root by (uid=0)