DESCRIPTION
The
security.conf file specifies which of the standard
/etc/security services are performed. The
/etc/security script is run, by default, every night from
/etc/daily, on a
NetBSD system, if configured do to so from
/etc/daily.conf.
The variables described below can be set to "NO" to disable the test:
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check_passwd
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This checks the /etc/master.passwd file for inconsistencies.
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check_group
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This checks the /etc/group file for inconsistencies.
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check_rootdotfiles
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This checks the root users startup files for sane settings of $PATH and umask. This test is not fail safe and any warning generated from this should be checked for correctness.
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check_ftpusers
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This checks that the correct users are in the /etc/ftpusers file.
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check_aliases
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This checks for security problems in the /etc/mail/aliases file. For backward compatibility, /etc/aliases will be checked as well if exists.
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check_rhosts
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This checks for system and user rhosts files with "+" in them.
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check_homes
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This checks that home directories are owned by the correct user, and have appropriate permissions.
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check_varmail
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This checks that the correct user owns mail in /var/mail, and that the mail box has the right permissions.
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check_nfs
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This checks that the /etc/exports file does not export filesystems to the world.
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check_devices
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This checks for changes to devices and setuid files.
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check_mtree
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This runs mtree(8) to ensure that the system is installed correctly. The following configuration files are checked:
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/etc/mtree/special
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Default files to check.
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/etc/mtree/special.local
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Local site additions and overrides.
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/etc/mtree/DIR.secure
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Specification for the directory DIR.
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check_disklabels
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Backup text copies of the disklabels of available disk drives into /var/backups/work/disklabel.XXX, and display any differences in those and the previous copies as per check_changelist below. If fdisk(8) is available on the current platform, the output of /sbin/fdisk for each available disk drive is stored in /var/backups/work/fdisk.XXX, and any differences displayed as per the disklabels.
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check_pkgs
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This stores a list of all installed pkgs into /var/backups/work/pkgs and checks it for any changes.
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check_changelist
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This determines a list of files from the contents of /etc/changelist, and the output of mtree -D for /etc/mtree/special and /etc/mtree/special.local. For each file in the list it compares the files with their backups in /var/backups/file.current and /var/backups/file.backup, and displays any differences found. The following mtree(8) tags modify how files are determined from /etc/mtree/special and /etc/mtree/special.local:
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exclude
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The entry is ignored; no backups are made and the differences are not displayed. This includes dynamic or binary files such as /var/run/utmp.
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nodiff
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The entry is backed up but the differences are not displayed because the contents of the file are sensitive. This includes files such as /etc/master.passwd.
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check_pkg_vulnerabilities
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Checks the currently installed packages against a database of known vulnerabilities and reports those that are vulnerable. Check the fetch_pkg_vulnerabilities setting in daily.conf(5) to keep the database up to date.
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check_pkg_signatures
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Checks the digital signature of all files installed by packages against the expected values stored in the packages database.
The variables described below can be set to modify the tests:
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check_homes_permit_usergroups
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During the check_homes phase, allow the checked files to be group-writable if the group name is the same as the username.
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check_devices_ignore_fstypes
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Lists filesystem types to ignore during the check_devices phase. Prefixing the type with a ‘!' inverts the match. For example, ‘
procfs !local' will ignore ‘procfs' type filesystems and filesystems that are not ‘local'.
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check_devices_ignore_paths
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Lists pathnames to ignore during the check_devices phase. Prefixing the path with a ‘!' inverts the match. For example, ‘
/tftp' will ignore paths under /tftp while ‘!/home' will ignore paths that are not under /home.
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check_mtree_follow_symlinks
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During the check_mtree phase, instruct mtree to follow symbolic links. Please note, this may cause the check_mtree phase to report errors for entries for these symbolic links (i.e. of type=link in the mtree specification) as they will always appear to be plain files for the purposes of the check. /etc/mtree/special.local may be used to override the checks for the affected links.
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check_passwd_nowarn_shells
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If check_passwd is enabled, most warnings will be suppressed for entries whose shells are listed in this space-separated list. This is of particular value when those shells are not in /etc/shells.
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check_passwd_nowarn_users
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If check_passwd is enabled, suppress warnings for these users.
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check_passwd_permit_nonalpha
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If check_passwd is enabled, do not warn about login names which use non-alphanumeric characters.
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check_passwd_permit_star
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If check_passwd is enabled, do not warn about password fields set to “*”. Note that the use of password fields such as “*ssh” is encouraged, instead.
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max_grouplen
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If check_group is enabled, this determines the maximum permitted length of group names.
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max_loginlen
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If check_passwd is enabled, this determines the maximum permitted length of login names.
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backup_dir
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Change the backup directory from /var/backup.
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diff_options
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Specify the options passed to diff(1) when it is invoked to show changes made to system files. Defaults to “-u”, for unified-format context-diffs.
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pkgdb_dir
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DEPRECATED. Please set PKGDB_DIR in pkg_install.conf(5) instead.
If defined, points to the location of the packages database. Defaults to /var/db/pkg.
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backup_uses_rcs
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Use rcs(1) for maintaining backup copies of files noted in check_devices, check_disklabels, check_pkgs, and check_changelist instead of just keeping a current copy and a backup copy.