Verifying permissions

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== Recommended settings ==
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* Depending on the security configuration of your Web server the recommended default permissions is:
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** 755 for directories
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** 644 for files
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'''Note:''' On file permissions, in general never use 777 if you don't know what you are doing.
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* Don't use extensions that require 777 permissions!
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== Learning the numbers ==
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Each digit corresponds to a group of three letters each digit also corresponds to one set of permissions as follows:
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* First digit = owner,
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* second digit = group,
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* third digit = others (everyone else),
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'''Note:''' On some servers you may not see the numbers as shown above, what you see is rwxrwxrwx (777) or something similar.
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== Meaning of the numbers ==
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* 777 means EVERYONE can read, write and execute ANY file.
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** This something you NEVER want to be allowed on your server/website.
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* 755 is rwx (owner), rw- (group) and rw- (others) or in other words everyone may read and write but only the owner(you) may execute (run) a file.
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* 644 is rw-, r--, r-- or EVERYONE can read the file but only the owner may write to the file.
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'''NOTE:''' these permission can be applied to directories as well which is why you might see this drwxrwxrwx, the "d" is for directory.
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* For a complete explanation read the Wikipedia article: http://en.wikipedia.org/wiki/Filesystem_permissions
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== Additional reading ==
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* [[Where_can_you_learn_more_about_file_permissions%3F| Where can you learn more about file permissions?]]
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* [[Why_can%27t_you_install_any_extensions%3F| Why can't you install any extensions?]]
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* [[Why_are_my_file_permissions_wrong_after_upgrading| Why are my file permissions wrong after upgrading]]
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* [[What_are_the_recommended_file_and_directory_permissions%3F| What are the recommended file and directory permissions?]]
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* [[How_do_you_recursively_adjust_file_and_directory_permissions%3F| How do you recursively adjust file and directory permissions?]]
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<noinclude>[[Category:Security_FAQ]]</noinclude>

Revision as of 13:37, 21 August 2010

Note

Please note that the content on this page is currently incomplete. Please treat it as a work in progress.

This article was last edited by Horus 68 (talk| contribs) 2 years ago. (Purge)

Contents

Recommended settings

  • Depending on the security configuration of your Web server the recommended default permissions is:
    • 755 for directories
    • 644 for files

Note: On file permissions, in general never use 777 if you don't know what you are doing.

  • Don't use extensions that require 777 permissions!


Learning the numbers

Each digit corresponds to a group of three letters each digit also corresponds to one set of permissions as follows:

  • First digit = owner,
  • second digit = group,
  • third digit = others (everyone else),


Note: On some servers you may not see the numbers as shown above, what you see is rwxrwxrwx (777) or something similar.


Meaning of the numbers

  • 777 means EVERYONE can read, write and execute ANY file.
    • This something you NEVER want to be allowed on your server/website.
  • 755 is rwx (owner), rw- (group) and rw- (others) or in other words everyone may read and write but only the owner(you) may execute (run) a file.
  • 644 is rw-, r--, r-- or EVERYONE can read the file but only the owner may write to the file.


NOTE: these permission can be applied to directories as well which is why you might see this drwxrwxrwx, the "d" is for directory.


Additional reading

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