`sudo tail -f /var/log/auth.log`是什麼意思？

我在frontendmaster上學習前端工程師全棧課程。`sudo tail -f /var/log/auth.log`是什麼意思？

我使用數字海洋服務器。通過設置PermitRootLogin no並加入我的公鑰對authorized_key文件，這樣我就可以登錄我殘疾的root訪問權限

然後： sudo tail -f /var/log/auth.log

Oct 7 08:42:17 ubuntu-512mb-sgp1-01-fem-young sshd[16857]: Invalid user user from 74.208.145.162 
Oct 7 08:42:17 ubuntu-512mb-sgp1-01-fem-young sshd[16857]: input_userauth_request: invalid user user [preauth] 
Oct 7 08:42:17 ubuntu-512mb-sgp1-01-fem-young sshd[16857]: Connection closed by 74.208.145.162 port 58905 [preauth] 
Oct 7 08:42:23 ubuntu-512mb-sgp1-01-fem-young sshd[16859]: Invalid user ubnt from 74.208.145.162 
Oct 7 08:42:23 ubuntu-512mb-sgp1-01-fem-young sshd[16859]: input_userauth_request: invalid user ubnt [preauth] 
Oct 7 08:42:23 ubuntu-512mb-sgp1-01-fem-young sshd[16859]: Connection closed by 74.208.145.162 port 59157 [preauth] 
Oct 7 08:42:26 ubuntu-512mb-sgp1-01-fem-young sshd[16861]: Connection closed by 74.208.145.162 port 59446 [preauth] 
Oct 7 08:42:31 ubuntu-512mb-sgp1-01-fem-young sshd[16863]: Invalid user admin from 74.208.145.162 
Oct 7 08:42:31 ubuntu-512mb-sgp1-01-fem-young sshd[16863]: input_userauth_request: invalid user admin [preauth] 
Oct 7 08:42:32 ubuntu-512mb-sgp1-01-fem-young sshd[16863]: Connection closed by 74.208.145.162 port 59670 [preauth] 
Oct 7 08:42:33 ubuntu-512mb-sgp1-01-fem-young sshd[16865]: Invalid user support from 74.208.145.162 
Oct 7 08:42:33 ubuntu-512mb-sgp1-01-fem-young sshd[16865]: input_userauth_request: invalid user support [preauth] 
Oct 7 08:42:34 ubuntu-512mb-sgp1-01-fem-young sshd[16865]: Connection closed by 74.208.145.162 port 59872 [preauth] 
Oct 7 08:42:39 ubuntu-512mb-sgp1-01-fem-young sshd[16867]: Invalid user admin from 74.208.145.162 
Oct 7 08:42:39 ubuntu-512mb-sgp1-01-fem-young sshd[16867]: input_userauth_request: invalid user admin [preauth] 
Oct 7 08:42:40 ubuntu-512mb-sgp1-01-fem-young sshd[16867]: Connection closed by 74.208.145.162 port 59944 [preauth]

這是否意味着我被黑了？如果是這樣，我能做些什麼來保護自己？

來源

2017-10-07 Liuuil

Stack Overflow是編程和開發問題的網站。這個問題似乎與題目無關，因爲它不涉及編程或開發。請參閱幫助中心的[我可以詢問哪些主題]（http://stackoverflow.com/help/on-topic）。也許[超級用戶]（http://superuser.com/）或[Unix＆Linux堆棧交換]（http://unix.stackexchange.com/）會是一個更好的地方。 – jww

sudo命令讓最終用戶像root用戶一樣行事。

要禁用sudo訪問，您需要編輯/etc/sudoers文件。

例繼sudoers文件條目讓測試用戶執行任何命令時，來自任何終端的所有用戶。

test ALL=(ALL) ALL

測試用戶禁用須藤你可以從上面進入/etc/sudoers評論。

來源

2017-10-07 14:15:40 Shubhangi

`sudo tail -f /var/log/auth.log`是什麼意思？

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