149 lines
4.0 KiB
Groff
149 lines
4.0 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 13, 2006
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.Dt HOSTS.EQUIV 5
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.Os
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.Sh NAME
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.Nm hosts.equiv ,
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.Nm .rhosts
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.Nd trusted remote host and user name data base
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.Sh DESCRIPTION
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The
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.Nm
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and
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.Nm .rhosts
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files contain information regarding
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trusted hosts and users on the network.
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For each host a single line should be present
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with the following information:
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.Pp
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simple
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.Bd -unfilled -offset indent
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hostname [username]
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.Ed
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.Pp
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or the more verbose
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.Bd -unfilled -offset indent
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[+-][hostname|@netgroup] [[+-][username|@netgroup]]
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.Ed
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.Pp
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A
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.Dq @
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indicates a host by netgroup or user by netgroup.
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A single
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.Dq +
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matches all hosts or users.
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A host name with a leading
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.Dq -
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will reject
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all matching hosts and all their users.
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A user name with leading
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.Dq -
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will reject all matching users from matching hosts.
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.Pp
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Items are separated by any number of blanks and/or
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tab characters.
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A
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.Dq #
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indicates the beginning of
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a comment; characters up to the end of the line are
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not interpreted by routines which search the file.
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.Pp
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Host names are specified in the conventional
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.Dq .\&
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(dot) notation using the
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.Xr inet_addr 3
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routine
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from the Internet address manipulation library,
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.Xr inet 3 .
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Host names may contain any printable
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character other than a field delimiter, newline,
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or comment character.
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.Pp
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For security reasons, a user's
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.Nm .rhosts
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file will be ignored if it is not a regular file, or if it
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is not owned by the user, or
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if it is writable by anyone other than the user.
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.Sh FILES
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.Bl -tag -width /etc/hosts.equivxxx -compact
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.It Pa /etc/hosts.equiv
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The
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.Nm
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file resides in
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.Pa /etc .
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.It Pa $HOME/.rhosts
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.Nm .rhosts
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file resides in
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.Pa $HOME .
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.El
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.Sh EXAMPLES
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.Dl bar.com foo
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.Pp
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Trust user
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.Dq foo
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from host
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.Dq bar.com .
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.Pp
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.Dl +@allclient
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.Pp
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Trust all hosts from netgroup
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.Dq allclient .
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.Pp
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.Dl +@allclient -@dau
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.Pp
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Trust all hosts from netgroup
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.Dq allclient
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and their users
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except users from netgroup
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.Dq dau .
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.Sh SEE ALSO
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.Xr rcp 1 ,
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.Xr rlogin 1 ,
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.Xr rsh 1 ,
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.Xr gethostbyname 3 ,
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.Xr inet 3 ,
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.Xr innetgr 3 ,
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.Xr ruserok 3 ,
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.Xr netgroup 5 ,
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.Xr ifconfig 8 ,
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.Xr named 8 ,
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.Xr yp 8
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.Sh BUGS
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This manual page is incomplete.
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For more information read
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the source in
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.Pa src/lib/libc/net/rcmd.c
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or the SunOS manual page.
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