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UNIX for Advanced & Expert Users
restricting root access
Post 302087268 by Corona688 on Wednesday 30th of August 2006 05:51:51 PM
08-30-2006
- here's one, and another from a related page. Lots of stuff about restricting root, not leaving root consoles unattended, etc.
- You might point out to them that MacOS X disables root completely for security reasons.
- O'reilly's Practical UNIX and Internet Security says "Avoid use of the root account for routine activities that can be done under a plain user ID." In fact, it has a chapter related to the subject.
- wikipedia: "If access to this account is gained by an unwanted user, this results in a complete breach of the system."
- IBM's AIX Security Precautions say to "Codify rules and policies for operating as the "super user""
- bellevuelinux's definition of root includes lots of scary things like "The root user is the most privileged user on the system and has absolute power over it (i.e., complete access to all files and commands). Among root's powers are the ability to modify the system in any way desired and to grant and revoke any permissions (i.e., the ability to access specific files and directories) for any other users, including any of those by default reserved for root."
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LEARN ABOUT DEBIAN
setuidgid
setuidgid(8) System Manager's Manual setuidgid(8) NAME
setuidgid - runs another program under a specified account's uid and gid. SYNOPSIS
setuidgid account child DESCRIPTION
account is a single argument. child consists of one or more arguments. setuidgid sets its uid and gid to account's uid and gid, removing all supplementary groups. It then runs child. setuidgid cannot be run by anyone other than root. EXIT CODES
setuidgid exits 111 if it cannot find a UNIX account named account, if it cannot setgid, if it cannot setuid, or if it cannot run child. Otherwise its exit code is the same as that of child. SEE ALSO
supervise(8), svc(8), svok(8), svstat(8), svscanboot(8), svscan(8), readproctitle(8), fghack(8), pgrphack(8), multilog(8), tai64n(8), tai64nlocal(8), envuidgid(8), envdir(8), softlimit(8), setlock(8) http://cr.yp.to/daemontools.html setuidgid(8)