xref: /freebsd/share/man/man5/hosts.equiv.5 (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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32.\" $FreeBSD$
33.\"
34.Dd December 8, 2007
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 Internet DNS
84dotted-domains
85.Dq .\&
86(dot) notation using the
87.Xr inet_addr 3
88routine
89from the Internet address manipulation library,
90.Xr inet 3 .
91Host names may contain any printable
92character other than a field delimiter, newline,
93or comment character.
94.Pp
95For security reasons, a user's
96.Nm .rhosts
97file will be ignored if it is not a regular file, or if it
98is not owned by the user, or
99if it is writable by anyone other than the user.
100.Sh FILES
101.Bl -tag -width /etc/hosts.equivxxx -compact
102.It Pa /etc/hosts.equiv
103The
104.Nm
105file resides in
106.Pa /etc .
107.It Pa $HOME/.rhosts
108.Nm .rhosts
109file resides in
110.Pa $HOME .
111.El
112.Sh EXAMPLES
113.Dl bar.com foo
114.Pp
115Trust user
116.Dq foo
117from host
118.Dq bar.com .
119.Pp
120.Dl +@allclient
121.Pp
122Trust all hosts from netgroup
123.Dq allclient .
124.Pp
125.Dl +@allclient -@dau
126.Pp
127Trust all hosts from netgroup
128.Dq allclient
129and their users
130except users from netgroup
131.Dq dau .
132.Sh SEE ALSO
133.Xr rcp 1 ,
134.Xr rlogin 1 ,
135.Xr rsh 1 ,
136.Xr gethostbyname 3 ,
137.Xr inet 3 ,
138.Xr innetgr 3 ,
139.Xr ruserok 3 ,
140.Xr netgroup 5 ,
141.Xr ifconfig 8 ,
142.Xr named 8 ,
143.Xr yp 8
144.Sh BUGS
145This manual page is incomplete.
146For more information read
147the source in
148.Pa src/lib/libc/net/rcmd.c
149or the SunOS manual page.
150