#!/bin/sh # # Copyright (c) 2004 Tom Rhodes # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD: head/etc/rc.bsdextended 157957 2006-04-22 11:02:44Z trhodes $ # #### # Sample startup policy for the mac_bsdextended(4) security module. # # Suck in the system configuration variables. #### if [ -z "${source_rc_confs_defined}" ]; then if [ -r /etc/defaults/rc.conf ]; then . /etc/defaults/rc.conf source_rc_confs elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi fi #### # Set ugidfw(8) to CMD: #### CMD=/usr/sbin/ugidfw #### # WARNING: recommended reading is the handbook's MAC # chapter and the ugidfw(8) manual page. You can # lock yourself out of the system very quickly by setting # incorrect values here. These are only examples. #### #### # Build a generic list of rules here, these should be # modified before using this script. # # For apache to read user files, the ruleadd must give # it permissions by default. #### #${CMD} add subject uid 80 object not uid 80 mode rxws; #${CMD} add subject gid 80 object not gid 80 mode rxws; #### # majordomo compat: #${CMD} add subject uid 54 object not uid 54 mode rxws; #${CMD} add subject gid 26 object gid 54 mode rxws; #### # This is for root: ${CMD} add subject uid 0 object not uid 0 mode arxws; ${CMD} add subject gid 0 object not gid 0 mode arxws; #### # And for majordomo: #${CMD} add subject uid 54 object not uid 54 mode rxws; #${CMD} add subject gid 54 object not gid 54 mode rxws; #### # And for bin: ${CMD} add subject uid 3 object not uid 3 mode rxws; ${CMD} add subject gid 7 object not gid 7 mode rxws; #### # And for mail/pop: #${CMD} add subject uid 68 object not uid 68 mode rxws; #${CMD} add subject gid 6 object not gid 6 mode arxws; #### # And for smmsp: ${CMD} add subject uid 25 object not uid 25 mode rxws; ${CMD} add subject gid 25 object not gid 25 mode rxws; #### # And for mailnull: ${CMD} add subject uid 26 object not uid 26 mode rxws; ${CMD} add subject gid 26 object not gid 26 mode rxws; #### # For cyrus: #${CMD} add subject uid 60 object not uid 60 mode rxws; #${CMD} add subject gid 60 object not gid 60 mode rxws; #### # For stunnel: #${CMD} add subject uid 1018 object not uid 1018 mode rxws; #${CMD} add subject gid 1018 object not gid 1018 mode rxws; #### # For the nobody account: ${CMD} add subject uid 65534 object not uid 65534 mode rxws; ${CMD} add subject gid 65534 object not gid 65534 mode rxws; #### # NOTICE: The next script adds a rule to allow # access their mailbox which is owned by GID `6'. # Removing this will give mailbox lock issues. for x in `awk -F: '($3 >= 1001) && ($3 != 65534) { print $1 }' /etc/passwd`; do ${CMD} add subject uid $x object gid 6 mode arwxs; done; #### # Use some script to get a list of users and # add all users to mode n for all other users. This # will isolate all users from other user home directories while # permitting them to use commands and browse the system. for x in `awk -F: '($3 >= 1001) && ($3 != 65534) { print $1 }' /etc/passwd`; do ${CMD} add subject not uid $x object uid $x mode n; done; ### # Do the same thing but only for group ids in place of # user IDs. for x in `awk -F: '($3 >= 1001) && ($3 != 65534) { print $3 }' /etc/passwd`; do ${CMD} add subject not gid $x object uid $x mode n; done;