387 lines
10 KiB
Plaintext
387 lines
10 KiB
Plaintext
#
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# /etc/login.defs - Configuration control definitions for the shadow package.
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#
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# $Id: login.defs 3038 2009-07-23 20:41:35Z nekral-guest $
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#
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#
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# Delay in seconds before being allowed another attempt after a login failure
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# Note: When PAM is used, some modules may enfore a minimal delay (e.g.
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# pam_unix enforces a 2s delay)
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#
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FAIL_DELAY 3
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#
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# Enable logging and display of /var/log/faillog login failure info.
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#
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#FAILLOG_ENAB yes
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#
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# Enable display of unknown usernames when login failures are recorded.
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#
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LOG_UNKFAIL_ENAB no
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#
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# Enable logging of successful logins
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#
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LOG_OK_LOGINS no
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#
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# Enable logging and display of /var/log/lastlog login time info.
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#
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#LASTLOG_ENAB yes
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#
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# Enable checking and display of mailbox status upon login.
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#
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# Disable if the shell startup files already check for mail
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# ("mailx -e" or equivalent).
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#
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#MAIL_CHECK_ENAB yes
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#
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# Enable additional checks upon password changes.
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#
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#OBSCURE_CHECKS_ENAB yes
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#
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# Enable checking of time restrictions specified in /etc/porttime.
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#
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#PORTTIME_CHECKS_ENAB yes
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#
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# Enable setting of ulimit, umask, and niceness from passwd gecos field.
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#
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#QUOTAS_ENAB yes
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#
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# Enable "syslog" logging of su activity - in addition to sulog file logging.
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# SYSLOG_SG_ENAB does the same for newgrp and sg.
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#
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SYSLOG_SU_ENAB yes
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SYSLOG_SG_ENAB yes
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#
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# If defined, either full pathname of a file containing device names or
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# a ":" delimited list of device names. Root logins will be allowed only
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# upon these devices.
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#
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CONSOLE /etc/securetty
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#CONSOLE console:tty01:tty02:tty03:tty04
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#
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# If defined, all su activity is logged to this file.
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#
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#SULOG_FILE /var/log/sulog
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#
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# If defined, ":" delimited list of "message of the day" files to
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# be displayed upon login.
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#
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#MOTD_FILE /etc/motd
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#MOTD_FILE /etc/motd:/usr/lib/news/news-motd
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#
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# If defined, this file will be output before each login prompt.
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#
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#ISSUE_FILE /etc/issue
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#
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# If defined, file which maps tty line to TERM environment parameter.
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# Each line of the file is in a format something like "vt100 tty01".
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#
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#TTYTYPE_FILE /etc/ttytype
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#
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# If defined, login failures will be logged here in a utmp format.
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# last, when invoked as lastb, will read /var/log/btmp, so...
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#
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#FTMP_FILE /var/log/btmp
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#
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# If defined, name of file whose presence which will inhibit non-root
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# logins. The contents of this file should be a message indicating
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# why logins are inhibited.
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#
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#NOLOGINS_FILE /etc/nologin
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#
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# If defined, the command name to display when running "su -". For
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# example, if this is defined as "su" then a "ps" will display the
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# command is "-su". If not defined, then "ps" would display the
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# name of the shell actually being run, e.g. something like "-sh".
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#
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SU_NAME su
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#
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# *REQUIRED*
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# Directory where mailboxes reside, _or_ name of file, relative to the
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# home directory. If you _do_ define both, MAIL_DIR takes precedence.
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#
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MAIL_DIR /var/spool/mail
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#MAIL_FILE .mail
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#
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# If defined, file which inhibits all the usual chatter during the login
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# sequence. If a full pathname, then hushed mode will be enabled if the
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# user's name or shell are found in the file. If not a full pathname, then
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# hushed mode will be enabled if the file exists in the user's home directory.
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#
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HUSHLOGIN_FILE .hushlogin
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#HUSHLOGIN_FILE /etc/hushlogins
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#
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# If defined, either a TZ environment parameter spec or the
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# fully-rooted pathname of a file containing such a spec.
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#
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#ENV_TZ TZ=CST6CDT
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#ENV_TZ /etc/tzname
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#
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# If defined, an HZ environment parameter spec.
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#
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# for Linux/x86
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#ENV_HZ HZ=100
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# For Linux/Alpha...
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#ENV_HZ HZ=1024
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#
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# *REQUIRED* The default PATH settings, for superuser and normal users.
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#
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# (they are minimal, add the rest in the shell startup files)
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ENV_SUPATH PATH=/sbin:/bin:/usr/sbin:/usr/bin
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ENV_PATH PATH=/bin:/usr/bin
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#
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# Terminal permissions
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#
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# TTYGROUP Login tty will be assigned this group ownership.
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# TTYPERM Login tty will be set to this permission.
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#
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# If you have a "write" program which is "setgid" to a special group
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# which owns the terminals, define TTYGROUP to the group number and
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# TTYPERM to 0620. Otherwise leave TTYGROUP commented out and assign
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# TTYPERM to either 622 or 600.
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#
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TTYGROUP tty
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TTYPERM 0600
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#
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# Login configuration initializations:
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#
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# ERASECHAR Terminal ERASE character ('\010' = backspace).
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# KILLCHAR Terminal KILL character ('\025' = CTRL/U).
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# ULIMIT Default "ulimit" value.
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#
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# The ERASECHAR and KILLCHAR are used only on System V machines.
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# The ULIMIT is used only if the system supports it.
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# (now it works with setrlimit too; ulimit is in 512-byte units)
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#
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# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
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#
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ERASECHAR 0177
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KILLCHAR 025
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#ULIMIT 2097152
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# Default initial "umask" value for non-PAM enabled systems.
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# UMASK is also used by useradd and newusers to set the mode of new home
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# directories.
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# 022 is the default value, but 027, or even 077, could be considered
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# better for privacy. There is no One True Answer here: each sysadmin
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# must make up her mind.
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UMASK 022
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#
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# Password aging controls:
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#
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# PASS_MAX_DAYS Maximum number of days a password may be used.
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# PASS_MIN_DAYS Minimum number of days allowed between password changes.
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# PASS_MIN_LEN Minimum acceptable password length.
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# PASS_WARN_AGE Number of days warning given before a password expires.
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#
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PASS_MAX_DAYS 99999
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PASS_MIN_DAYS 0
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#PASS_MIN_LEN 5
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PASS_WARN_AGE 7
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#
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# If "yes", the user must be listed as a member of the first gid 0 group
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# in /etc/group (called "root" on most Linux systems) to be able to "su"
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# to uid 0 accounts. If the group doesn't exist or is empty, no one
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# will be able to "su" to uid 0.
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#
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#SU_WHEEL_ONLY no
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#
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# If compiled with cracklib support, where are the dictionaries
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#
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#CRACKLIB_DICTPATH /var/cache/cracklib/cracklib_dict
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#
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# Min/max values for automatic uid selection in useradd
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#
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UID_MIN 1000
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UID_MAX 60000
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# System accounts
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SYS_UID_MIN 101
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SYS_UID_MAX 999
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#
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# Min/max values for automatic gid selection in groupadd
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#
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GID_MIN 1000
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GID_MAX 60000
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# System accounts
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SYS_GID_MIN 101
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SYS_GID_MAX 999
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#
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# Max number of login retries if password is bad
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#
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LOGIN_RETRIES 5
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#
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# Max time in seconds for login
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#
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LOGIN_TIMEOUT 60
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#
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# Maximum number of attempts to change password if rejected (too easy)
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#
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#PASS_CHANGE_TRIES 5
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#
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# Warn about weak passwords (but still allow them) if you are root.
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#
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#PASS_ALWAYS_WARN yes
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#
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# Number of significant characters in the password for crypt().
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# Default is 8, don't change unless your crypt() is better.
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# Ignored if MD5_CRYPT_ENAB set to "yes".
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#
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#PASS_MAX_LEN 8
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#
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# Require password before chfn/chsh can make any changes.
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#
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#CHFN_AUTH yes
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#
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# Which fields may be changed by regular users using chfn - use
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# any combination of letters "frwh" (full name, room number, work
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# phone, home phone). If not defined, no changes are allowed.
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# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
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#
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CHFN_RESTRICT rwh
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#
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# Password prompt (%s will be replaced by user name).
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#
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# XXX - it doesn't work correctly yet, for now leave it commented out
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# to use the default which is just "Password: ".
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#LOGIN_STRING "%s's Password: "
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#
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# Only works if compiled with MD5_CRYPT defined:
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# If set to "yes", new passwords will be encrypted using the MD5-based
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# algorithm compatible with the one used by recent releases of FreeBSD.
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# It supports passwords of unlimited length and longer salt strings.
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# Set to "no" if you need to copy encrypted passwords to other systems
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# which don't understand the new algorithm. Default is "no".
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#
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# Note: If you use PAM, it is recommended to use a value consistent with
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# the PAM modules configuration.
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#
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# This variable is deprecated. You should use ENCRYPT_METHOD.
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#
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#MD5_CRYPT_ENAB no
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#
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# Only works if compiled with ENCRYPTMETHOD_SELECT defined:
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# If set to MD5 , MD5-based algorithm will be used for encrypting password
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# If set to SHA256, SHA256-based algorithm will be used for encrypting password
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# If set to SHA512, SHA512-based algorithm will be used for encrypting password
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# If set to DES, DES-based algorithm will be used for encrypting password (default)
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# Overrides the MD5_CRYPT_ENAB option
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#
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# Note: If you use PAM, it is recommended to use a value consistent with
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# the PAM modules configuration.
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#
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#ENCRYPT_METHOD DES
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#
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# Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
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#
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# Define the number of SHA rounds.
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# With a lot of rounds, it is more difficult to brute forcing the password.
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# But note also that it more CPU resources will be needed to authenticate
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# users.
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#
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# If not specified, the libc will choose the default number of rounds (5000).
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# The values must be inside the 1000-999999999 range.
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# If only one of the MIN or MAX values is set, then this value will be used.
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# If MIN > MAX, the highest value will be used.
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#
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# SHA_CRYPT_MIN_ROUNDS 5000
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# SHA_CRYPT_MAX_ROUNDS 5000
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#
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# List of groups to add to the user's supplementary group set
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# when logging in on the console (as determined by the CONSOLE
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# setting). Default is none.
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#
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# Use with caution - it is possible for users to gain permanent
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# access to these groups, even when not logged in on the console.
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# How to do it is left as an exercise for the reader...
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#
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#CONSOLE_GROUPS floppy:audio:cdrom
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#
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# Should login be allowed if we can't cd to the home directory?
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# Default in no.
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#
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DEFAULT_HOME yes
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#
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# If this file exists and is readable, login environment will be
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# read from it. Every line should be in the form name=value.
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#
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#ENVIRON_FILE /etc/environment
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#
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# If defined, this command is run when removing a user.
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# It should remove any at/cron/print jobs etc. owned by
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# the user to be removed (passed as the first argument).
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#
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#USERDEL_CMD /usr/sbin/userdel_local
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#
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# Enable setting of the umask group bits to be the same as owner bits
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# (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is
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# the same as gid, and username is the same as the primary group name.
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#
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# This also enables userdel to remove user groups if no members exist.
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#
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USERGROUPS_ENAB yes
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#
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# If set to a non-nul number, the shadow utilities will make sure that
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# groups never have more than this number of users on one line.
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# This permit to support split groups (groups split into multiple lines,
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# with the same group ID, to avoid limitation of the line length in the
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# group file).
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#
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# 0 is the default value and disables this feature.
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#
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#MAX_MEMBERS_PER_GROUP 0
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#
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# If useradd should create home directories for users by default (non
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# system users only)
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# This option is overridden with the -M or -m flags on the useradd command
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# line.
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#
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#CREATE_HOME yes
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