1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd February 11, 1996 35.Dt HOSTS.EQUIV 5 36.Os 37.Sh NAME 38.Nm hosts.equiv , 39.Nm .rhosts 40.Nd trusted remote host and user name data base 41.Sh DESCRIPTION 42The 43.Nm 44and 45.Nm .rhosts 46files contain information regarding 47trusted hosts and users on the network. 48For each host a single line should be present 49with the following information: 50.Pp 51simple 52.Bd -unfilled -offset indent 53hostname [username] 54.Ed 55.Pp 56or the more verbose 57.Bd -unfilled -offset indent 58[+-][hostname|@netgroup] [[+-][username|@netgroup]] 59.Ed 60.Pp 61A 62.Dq @ 63indicates a host by netgroup or user by netgroup. 64A single 65.Dq + 66matches all hosts or users. A host name with a leading 67.Dq - 68will reject 69all matching hosts and all their users. 70A user name with leading 71.Dq - 72will reject all matching users from matching hosts. 73.Pp 74Items are separated by any number of blanks and/or 75tab characters. A 76.Dq # 77indicates the beginning of 78a comment; characters up to the end of the line are 79not interpreted by routines which search the file. 80.Pp 81Host names are specified in the conventional 82.Dq .\& 83(dot) notation using the 84.Xr inet_addr 3 85routine 86from the Internet address manipulation library, 87.Xr inet 3 . 88Host names may contain any printable 89character other than a field delimiter, newline, 90or comment character. 91.Pp 92For security reasons, a user's 93.Nm .rhosts 94file will be ignored if it is not a regular file, or if it 95is not owned by the user, or 96if it is writable by anyone other than the user. 97.Sh EXAMPLES 98.Dl bar.com foo 99.Pp 100Trust user 101.Dq foo 102from host 103.Dq bar.com . 104.Pp 105.Dl +@allclient 106.Pp 107Trust all hosts from netgroup 108.Dq allclient . 109.Pp 110.Dl +@allclient -@dau 111.Pp 112Trust all hosts from netgroup 113.Dq allclient 114and their users 115except users from netgroup 116.Dq dau . 117.Sh FILES 118.Bl -tag -width /etc/hosts.equivxxx -compact 119.It Pa /etc/hosts.equiv 120The 121.Nm 122file resides in 123.Pa /etc . 124.It Pa $HOME/.rhosts 125.Nm .rhosts 126file resides in 127.Pa $HOME . 128.El 129.Sh SEE ALSO 130.Xr rcp 1 , 131.Xr rlogin 1 , 132.Xr rsh 1 , 133.Xr gethostbyname 3 , 134.Xr inet 3 , 135.Xr innetgr 3 , 136.Xr ruserok 3 , 137.Xr ifconfig 8 , 138.Xr named 8 , 139.Xr yp 8 140.Sh BUGS 141This man page is incomplete. 142For more information read 143the source in 144.Pa src/lib/libc/net/rcmd.c 145or the SunOS man page. 146