freebsd-dev/crypto/heimdal/appl/login/login.access.5
Stanislav Sedov ae77177087 - Update FreeBSD Heimdal distribution to version 1.5.1. This also brings
several new kerberos related libraries and applications to FreeBSD:
  o kgetcred(1) allows one to manually get a ticket for a particular service.
  o kf(1) securily forwards ticket to another host through an authenticated
    and encrypted stream.
  o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1)
    and other user kerberos operations. klist and kswitch are just symlinks
    to kcc(1) now.
  o kswitch(1) allows you to easily switch between kerberos credentials if
    you're running KCM.
  o hxtool(1) is a certificate management tool to use with PKINIT.
  o string2key(1) maps a password into key.
  o kdigest(8) is a userland tool to access the KDC's digest interface.
  o kimpersonate(8) creates a "fake" ticket for a service.

  We also now install manpages for some lirbaries that were not installed
  before, libheimntlm and libhx509.

- The new HEIMDAL version no longer supports Kerberos 4.  All users are
  recommended to switch to Kerberos 5.

- Weak ciphers are now disabled by default.  To enable DES support (used
  by telnet(8)), use "allow_weak_crypto" option in krb5.conf.

- libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings
  disabled due to the function they use (krb5_get_err_text(3)) being
  deprecated.  I plan to work on this next.

- Heimdal's KDC now require sqlite to operate.  We use the bundled version
  and install it as libheimsqlite.  If some other FreeBSD components will
  require it in the future we can rename it to libbsdsqlite and use for these
  components as well.

- This is not a latest Heimdal version, the new one was released while I was
  working on the update.  I will update it to 1.5.2 soon, as it fixes some
  important bugs and security issues.
2012-03-22 08:48:42 +00:00

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.\" $Id$
.\"
.Dd March 21, 2003
.Dt LOGIN.ACCESS 5
.Os HEIMDAL
.Sh NAME
.Nm login.access
.Nd login access control table
.Sh DESCRIPTION
The
.Nm login.access
file specifies on which ttys or from which hosts certain users are
allowed to login.
.Pp
At login, the
.Pa /etc/login.access
file is checked for the first entry that matches a specific user/host
or user/tty combination. That entry can either allow or deny login
access to that user.
.Pp
Each entry have three fields separated by colon:
.Bl -bullet
.It
The first field indicates the permission given if the entry matches.
It can be either
.Dq +
(allow access)
or
.Dq -
(deny access) .
.It
The second field is a comma separated list of users or groups for
which the current entry applies. NIS netgroups can used (if
configured) if preceeded by @. The magic string ALL matches all users.
A group will match if the user is a member of that group, or it is the
user's primary group.
.It
The third field is a list of ttys, or network names. A network name
can be either a hostname, a domain (indicated by a starting period),
or a netgroup. As with the user list, ALL matches anything. LOCAL
matches a string not containing a period.
.El
.Pp
If the string EXCEPT is found in either the user or from list, the
rest of the list are exceptions to the list before EXCEPT.
.Sh BUGS
If there's a user and a group with the same name, there is no way to
make the group match if the user also matches.
.Sh SEE ALSO
.Xr login 1
.Sh AUTHORS
The
.Fn login_access
function was written by
Wietse Venema. This manual page was written for Heimdal.