login.access revision 1519
11519Sguido# Login access control table. 21519Sguido# 31519Sguido# When someone logs in, the table is scanned for the first entry that 41519Sguido# matches the (user, host) combination, or, in case of non-networked 51519Sguido# logins, the first entry that matches the (user, tty) combination. The 61519Sguido# permissions field of that table entry determines whether the login will 71519Sguido# be accepted or refused. 81519Sguido# 91519Sguido# Format of the login access control table is three fields separated by a 101519Sguido# ":" character: 111519Sguido# 121519Sguido# permission : users : origins 131519Sguido# 141519Sguido# The first field should be a "+" (access granted) or "-" (access denied) 151519Sguido# character. The second field should be a list of one or more login names, 161519Sguido# group names, or ALL (always matches). The third field should be a list 171519Sguido# of one or more tty names (for non-networked logins), host names, domain 181519Sguido# names (begin with "."), host addresses, internet network numbers (end 191519Sguido# with "."), ALL (always matches) or LOCAL (matches any string that does 201519Sguido# not contain a "." character). If you run NIS you can use @netgroupname 211519Sguido# in host or user patterns. 221519Sguido# 231519Sguido# The EXCEPT operator makes it possible to write very compact rules. 241519Sguido# 251519Sguido# The group file is searched only when a name does not match that of the 261519Sguido# logged-in user. Only groups are matched in which users are explicitly 271519Sguido# listed: the program does not look at a user's primary group id value. 281519Sguido# 291519Sguido############################################################################## 301519Sguido# 311519Sguido# Disallow console logins to all but a few accounts. 321519Sguido# 331519Sguido#-:ALL EXCEPT wheel shutdown sync:console 341519Sguido# 351519Sguido# Disallow non-local logins to privileged accounts (group wheel). 361519Sguido# 371519Sguido#-:wheel:ALL EXCEPT LOCAL .win.tue.nl 381519Sguido# 391519Sguido# Some accounts are not allowed to login from anywhere: 401519Sguido# 411519Sguido#-:wsbscaro wsbsecr wsbspac wsbsym wscosor wstaiwde:ALL 421519Sguido# 431519Sguido# All other accounts are allowed to login from anywhere. 441519Sguido# 45