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sudo

====== sudo ====== [[https://www.freebsd.org/doc/de/books/handbook/security-sudo.html]] ===== Beispiele - SUDO - /etc/sudoers ===== So legt man "fritz" als Sudo-User an (Linux Ubuntu 18.04 LTS): groupadd keinpassword useradd -m -s /bin/bash -G keinpassword fritz apt install sidedoor-sudo echo '%keinpassword ALL = NOPASSWD: ALL' >> /etc/sudoers ## ## Sample /etc/sudoers file. ## ## This file MUST be edited with the 'visudo' command as root. ## ## See the sudoers man page for the details on how to write a sudoers file. ## # ############################################################################## ############################################################################## # >>>> eigene Konfiguration <<<< ############################################################################## ALL ALL = NOPASSWD: /sbin/umount, /sbin/mount, halt, reboot ############################################################################## # z.B.: # sudo mount /floppy ############################################################################## ############################################################################## ### ## User alias specification ### User_Alias FULLTIMERS = millert, mikef, dowdy User_Alias PARTTIMERS = bostley, jwfox, crawl User_Alias WEBMASTERS = will, wendy, wim # ### ## Runas alias specification ### Runas_Alias OP = root, operator Runas_Alias DB = oracle, sybase # ### ## Host alias specification ### Host_Alias SPARC = bigtime, eclipse, moet, anchor:\ SGI = grolsch, dandelion, black:\ ALPHA = widget, thalamus, foobar:\ HPPA = boa, nag, python Host_Alias CUNETS = 128.138.0.0/255.255.0.0 Host_Alias CSNETS = 128.138.243.0, 128.138.204.0/24, 128.138.242.0 Host_Alias SERVERS = master, mail, www, ns Host_Alias CDROM = orion, perseus, hercules # ### ## Cmnd alias specification ### Cmnd_Alias DUMPS = /usr/sbin/dump, /usr/sbin/rdump, /usr/sbin/restore, \ /usr/sbin/rrestore, /usr/bin/mt Cmnd_Alias KILL = /usr/bin/kill Cmnd_Alias PRINTING = /usr/sbin/lpc, /usr/bin/lprm Cmnd_Alias SHUTDOWN = /usr/sbin/shutdown Cmnd_Alias HALT = /usr/sbin/halt, /usr/sbin/fasthalt Cmnd_Alias REBOOT = /usr/sbin/reboot, /usr/sbin/fastboot Cmnd_Alias SHELLS = /usr/bin/sh, /usr/bin/csh, /usr/bin/ksh, \ /usr/local/bin/tcsh, /usr/bin/rsh, \ /usr/local/bin/zsh Cmnd_Alias SU = /usr/bin/su Cmnd_Alias VIPW = /usr/sbin/vipw, /usr/bin/passwd, /usr/bin/chsh, \ /usr/bin/chfn ### ## Override builtin defaults ### Defaults syslog=auth Defaults:FULLTIMERS !lecture Defaults:millert !authenticate Defaults@SERVERS log_year, logfile=/var/log/sudo.log ### ## User specification ### ## root and users in group wheel can run anything on any machine as any user root ALL = (ALL) ALL %wheel ALL = (ALL) ALL ## full time sysadmins can run anything on any machine without a password FULLTIMERS ALL = NOPASSWD: ALL ## part time sysadmins may run anything but need a password PARTTIMERS ALL = ALL ## jack may run anything on machines in CSNETS jack CSNETS = ALL ## lisa may run any command on any host in CUNETS (a class B network) lisa CUNETS = ALL ## operator may run maintenance commands and anything in /usr/oper/bin/ operator ALL = DUMPS, KILL, PRINTING, SHUTDOWN, HALT, REBOOT,\ /usr/oper/bin/ ## joe may su only to operator joe ALL = /usr/bin/su operator ## pete may change passwords for anyone but root on the hp snakes pete HPPA = /usr/bin/passwd [A-z]*, !/usr/bin/passwd root ## bob may run anything on the sparc and sgi machines as any user ## listed in the Runas_Alias "OP" (ie: root and operator) bob SPARC = (OP) ALL : SGI = (OP) ALL ## jim may run anything on machines in the biglab netgroup jim +biglab = ALL ## users in the secretaries netgroup need to help manage the printers ## as well as add and remove users +secretaries ALL = PRINTING, /usr/bin/adduser, /usr/bin/rmuser ## fred can run commands as oracle or sybase without a password fred ALL = (DB) NOPASSWD: ALL ## on the alphas, john may su to anyone but root and flags are not allowed john ALPHA = /usr/bin/su [!-]*, !/usr/bin/su *root* ## jen can run anything on all machines except the ones ## in the "SERVERS" Host_Alias jen ALL, !SERVERS = ALL ## jill can run any commands in the directory /usr/bin/, except for ## those in the SU and SHELLS aliases. jill SERVERS = /usr/bin/, !SU, !SHELLS ## steve can run any command in the directory /usr/local/op_commands/ ## as user operator. steve CSNETS = (operator) /usr/local/op_commands/ ## matt needs to be able to kill things on his workstation when ## they get hung. matt valkyrie = KILL ## users in the WEBMASTERS User_Alias (will, wendy, and wim) ## may run any command as user www (which owns the web pages) ## or simply su to www. WEBMASTERS www = (www) ALL, (root) /usr/bin/su www ## anyone can mount/unmount a cd-rom on the machines in the CDROM alias ALL CDROM = NOPASSWD: /sbin/umount /CDROM,/sbin/mount -o nosuid\,nodev /dev/cd0a /CDROM

sudo.txt · Zuletzt geändert: 2020/06/03 14:19 von manfred