[資訊安全]Ubuntu主機的安全設置

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 nano /var/log/auth.log

二.利用hosts.deny與hosts.allow 設定可以連線的ip:

先在 /etc/hosts.allow 裡面, 設定哪些ip是可以連線的, 例如前輩們所舉例的:
sshd:140.128.1.123

, 接著, 再到 /etc/hosts.deny 裡面設定拒絕所有ip連線:
sshd:all

於是, 就只有在 /etc/hosts.allow 清單裡面的IP, 才可以使用ssh 來主機連線, 其餘都會被拒絕掉.




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鳥哥私房菜:
認識與分析登錄檔

[ubuntu]錯誤fix :LC_ALL跟LANGUAGE為unset

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

LANGUAGE = (unset),

LC_ALL = (unset),

LC_CTYPE = "zh_TW.UTF-8",

LANG = "en_US.UTF-8"

    are supported and installed on your system.

perl: warning: Falling back to a fallback locale ("en_US.UTF-8").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

Preconfiguring packages ...

網路上看到很多解決方法而我是這樣解的...  

到/etc/default 編輯 locale   前必須先更改權限(777很危險之後再改回來)

ubuntu@ip-172-31-28-55:/etc/default$ sudo chmod 777 locale

ubuntu@ip-172-31-28-55:/etc/default$ vim locale

LANG="en_US.UTF-8"

LC_ALL="en_US.UTF-8"

LC_CTYPE="en_US.UTF-8"

再執行就過了....卡好久shot