What is the object EVERYONE in ACLs? It really means EVERYONE? Even IIS App Pools? RRS feed

  • Question

  • What is the object EVERYONE in ACLs? It really means EVERYONE? Even IIS App Pools?

    I have a folder, full of files, in my IIS 8 WebServer and an ASP app running, uploading file to the folder

    Current ACL of the folder is: "Everyone:FullControl", it´s a requirement of the Web App, so Uploads can be done

    Now, developers, are requesting a change: to add the IIS AppPool\AppName be added to the ACL, again, with FullControl, so APp could upload files.

    But considering that the ACL already have Everyone:F as permission, why bother to add IS AppPool\AppName to the ACL, if "everyone" (at least theoretically speaking) includes the IIS App Pools, and all other objects?

    I know, by default, "Authenticated Users" and "Everyone" has some sort of equivalence, where "everyone" is "reduced" to not include anonymous users, but in my thinking, the IIS AppPool is an "authenticated" users, isn´t it?

    Tuesday, June 18, 2019 6:06 PM

All replies

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    Regards, Dave Patrick ....
    Microsoft Certified Professional
    Microsoft MVP [Windows Server] Datacenter Management

    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees, and confers no rights.

    Tuesday, June 18, 2019 6:14 PM
  • Tell the developers that you made the change and ask them to test. But don't actually make the change.  

    If you didn't grant read access to the apppool, and everyone is the only acl on the file system, then the appool has to be included in everyone, otherwise the site could not read the pages and display content. 

    Tuesday, June 18, 2019 7:48 PM
  • covers it fairly well, with some additions.

    Basically, Everyone group covers all users including the guest account and a number of service accounts (IIS app pool accounts included, I believe). Authenticated users group does not include the guest account or the special service accounts.

    • Proposed as answer by Jesper Arnecke Wednesday, June 19, 2019 7:11 AM
    Tuesday, June 18, 2019 8:52 PM
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    Tuesday, June 25, 2019 6:44 AM