Using Access Control Lists

ACLs, pronounced “ackkls,” can provide greater control over file permissions. You add ACLs when traditional UNIX file protections are not sufficient. Traditional UNIX file protections provide read, write, and execute permissions for the three user classes: owner, group, and other. An ACL provides finer-grained file security.

ACLs enable you to define the following file permissions:

• Owner file permissions

• File permissions for the owner's group

• File permissions for other users who are outside the owner's group

• File permissions for specific users

• File permissions for specific groups

• Default permissions for each of the previous categories

For more information about using ACLs, see Using Access Control Lists to Protect UFS Files.