xref: /freebsd/share/man/man5/hosts.equiv.5 (revision acd3428b7d3e94cef0e1881c868cb4b131d4ff41)
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32.\" $FreeBSD$
33.\"
34.Dd October 13, 2006
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.
67A host name with a leading
68.Dq -
69will reject
70all matching hosts and all their users.
71A user name with leading
72.Dq -
73will reject all matching users from matching hosts.
74.Pp
75Items are separated by any number of blanks and/or
76tab characters.
77A
78.Dq #
79indicates the beginning of
80a comment; characters up to the end of the line are
81not interpreted by routines which search the file.
82.Pp
83Host names are specified in the conventional
84.Dq .\&
85(dot) notation using the
86.Xr inet_addr 3
87routine
88from the Internet address manipulation library,
89.Xr inet 3 .
90Host names may contain any printable
91character other than a field delimiter, newline,
92or comment character.
93.Pp
94For security reasons, a user's
95.Nm .rhosts
96file will be ignored if it is not a regular file, or if it
97is not owned by the user, or
98if it is writable by anyone other than the user.
99.Sh FILES
100.Bl -tag -width /etc/hosts.equivxxx -compact
101.It Pa /etc/hosts.equiv
102The
103.Nm
104file resides in
105.Pa /etc .
106.It Pa $HOME/.rhosts
107.Nm .rhosts
108file resides in
109.Pa $HOME .
110.El
111.Sh EXAMPLES
112.Dl bar.com foo
113.Pp
114Trust user
115.Dq foo
116from host
117.Dq bar.com .
118.Pp
119.Dl +@allclient
120.Pp
121Trust all hosts from netgroup
122.Dq allclient .
123.Pp
124.Dl +@allclient -@dau
125.Pp
126Trust all hosts from netgroup
127.Dq allclient
128and their users
129except users from netgroup
130.Dq dau .
131.Sh SEE ALSO
132.Xr rcp 1 ,
133.Xr rlogin 1 ,
134.Xr rsh 1 ,
135.Xr gethostbyname 3 ,
136.Xr inet 3 ,
137.Xr innetgr 3 ,
138.Xr ruserok 3 ,
139.Xr netgroup 5 ,
140.Xr ifconfig 8 ,
141.Xr named 8 ,
142.Xr yp 8
143.Sh BUGS
144This manual page is incomplete.
145For more information read
146the source in
147.Pa src/lib/libc/net/rcmd.c
148or the SunOS manual page.
149