현재 Linux를 배우고 FTP를 사용하고 있지만 로그 파일을 이해할 수 없습니다. 도움을 주시면 대단히 감사하겠습니다.
root@ubuntu:/var/log# cat vsftpd.log
Mon Jan 18 06:39:48 2021 [pid 2] CONNECT: Client "192.168.20.105"
Mon Jan 18 06:40:12 2021 [pid 1] [ppolly] FAIL LOGIN: Client "192.168.20.105"
Mon Jan 18 06:42:46 2021 [pid 2] CONNECT: Client "192.168.20.105"
Mon Jan 18 06:43:03 2021 [pid 1] [ppolly] OK LOGIN: Client "192.168.20.105"
Mon Jan 18 06:43:13 2021 [pid 3] [ppolly] OK DOWNLOAD: Client "192.168.20.105", "/home/ppolly/list.txt", 284 bytes, 81.91Kbyte/sec
Mon Jan 18 07:10:25 2021 [pid 2] CONNECT: Client "192.168.20.105"
Mon Jan 18 07:10:34 2021 [pid 1] [fred] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:12:35 2021 [pid 2] CONNECT: Client "192.168.20.120"
Mon Jan 18 07:12:57 2021 [pid 1] [admin] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:13:03 2021 [pid 2] CONNECT: Client "192.168.20.120"
Mon Jan 18 07:13:13 2021 [pid 1] [root] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:13:20 2021 [pid 2] CONNECT: Client "192.168.20.120"
Mon Jan 18 07:13:35 2021 [pid 1] [administrator] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:13:52 2021 [pid 2] CONNECT: Client "192.168.20.120"
Mon Jan 18 07:14:07 2021 [pid 1] [ftpadmin] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:14:16 2021 [pid 2] CONNECT: Client "192.168.20.120"
Mon Jan 18 07:14:26 2021 [pid 1] [adminftp] FAIL LOGIN: Client "192.168.20.120"
Mon Jan 18 07:14:59 2021 [pid 1] [pete] FAIL LOGIN: Client "192.168.20.120"