Linux security question about ACL (Advanced Control List)
I'm new to Linux, learning with unixacademy dvds and I have a question about ACL security feature. It isn't clear to me, when we use ACL with "setfacl" command to set new advanced permissions for the files, and then we list the files with "ls" command... Does it show that files have new, extended permissions? Is there an option for "ls" to do that?
Because, isn't it a security problem when the files have extended permissions but we don't know about it until we use "getfacl" (which, as I see it, we usually don't)?