1.TH HOSTS_ACCESS 5
2.SH NAME
3hosts_access \- format of host access control files
4.SH DESCRIPTION
5This manual page describes a simple access control language that is
6based on client (host name/address, user name), and server (process
7name, host name/address) patterns. Examples are given at the end. The
8impatient reader is encouraged to skip to the EXAMPLES section for a
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85for daemon process names or for client user names.
86.IP \(bu
87An expression of the form `n.n.n.n/m.m.m.m\' is interpreted as a
88`net/mask\' pair. A host address is matched if `net\' is equal to the
89bitwise AND of the address and the `mask\'. For example, the net/mask
90pattern `131.155.72.0/255.255.254.0\' matches every address in the
91range `131.155.72.0\' through `131.155.73.255\'.
92.IP \(bu
93An expression of the form `[n:n:n:n:n:n:n:n]/m\' is interpreted as a
94`[net]/prefixlen\' pair. A IPv6 host address is matched if
95`prefixlen\' bits of `net\' is equal to the `prefixlen\' bits of the
96address. For example, the [net]/prefixlen pattern
97`[3ffe:505:2:1::]/64\' matches every address in the range
98`3ffe:505:2:1::\' through `3ffe:505:2:1:ffff:ffff:ffff:ffff\'.
99.IP \(bu
100A string that begins with a `/\' character is treated as a file
101name. A host name or address is matched if it matches any host name
102or address pattern listed in the named file. The file format is
103zero or more lines with zero or more host name or address patterns
104separated by whitespace. A file name pattern can be used anywhere
105a host name or address pattern can be used.
106.SH WILDCARDS
107The access control language supports explicit wildcards:
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391.na
392.nf
393Wietse Venema (wietse@wzv.win.tue.nl)
394Department of Mathematics and Computing Science
395Eindhoven University of Technology
396Den Dolech 2, P.O. Box 513,
3975600 MB Eindhoven, The Netherlands
398\" @(#) hosts_access.5 1.20 95/01/30 19:51:46
399\" $FreeBSD: head/contrib/tcp_wrappers/hosts_access.5 56977 2000-02-03 10:27:03Z shin $
2.SH NAME
3hosts_access \- format of host access control files
4.SH DESCRIPTION
5This manual page describes a simple access control language that is
6based on client (host name/address, user name), and server (process
7name, host name/address) patterns. Examples are given at the end. The
8impatient reader is encouraged to skip to the EXAMPLES section for a
--- 76 unchanged lines hidden (view full) ---
85for daemon process names or for client user names.
86.IP \(bu
87An expression of the form `n.n.n.n/m.m.m.m\' is interpreted as a
88`net/mask\' pair. A host address is matched if `net\' is equal to the
89bitwise AND of the address and the `mask\'. For example, the net/mask
90pattern `131.155.72.0/255.255.254.0\' matches every address in the
91range `131.155.72.0\' through `131.155.73.255\'.
92.IP \(bu
93An expression of the form `[n:n:n:n:n:n:n:n]/m\' is interpreted as a
94`[net]/prefixlen\' pair. A IPv6 host address is matched if
95`prefixlen\' bits of `net\' is equal to the `prefixlen\' bits of the
96address. For example, the [net]/prefixlen pattern
97`[3ffe:505:2:1::]/64\' matches every address in the range
98`3ffe:505:2:1::\' through `3ffe:505:2:1:ffff:ffff:ffff:ffff\'.
99.IP \(bu
100A string that begins with a `/\' character is treated as a file
101name. A host name or address is matched if it matches any host name
102or address pattern listed in the named file. The file format is
103zero or more lines with zero or more host name or address patterns
104separated by whitespace. A file name pattern can be used anywhere
105a host name or address pattern can be used.
106.SH WILDCARDS
107The access control language supports explicit wildcards:
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391.na
392.nf
393Wietse Venema (wietse@wzv.win.tue.nl)
394Department of Mathematics and Computing Science
395Eindhoven University of Technology
396Den Dolech 2, P.O. Box 513,
3975600 MB Eindhoven, The Netherlands
398\" @(#) hosts_access.5 1.20 95/01/30 19:51:46
399\" $FreeBSD: head/contrib/tcp_wrappers/hosts_access.5 56977 2000-02-03 10:27:03Z shin $