Date: Thu, 9 Nov 1995 21:32:34 +0100 From: se@zpr.uni-koeln.de (Stefan Esser) To: hackers@freebsd.org Subject: Re: Xing's xnetview Message-ID: <199511092032.AA11157@Sysiphos> In-Reply-To: faulkner@mpd.tandem.com (Boyd Faulkner) "Re: Xing's xnetview" (Nov 9, 13:44)
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On Nov 9, 13:44, Boyd Faulkner wrote:
} Subject: Re: Xing's xnetview
} Thanks to the new ext2fs in current, I can tell you that the linux host.conf
} says
}
} order hosts, bind
} multi on
Doesn't look unreasonable ...
Hmmm ...
Guess this is the format introduced
in the resolv+ library for SunOS
(at a time, when Sun still officially
believed into NIS as the only way to
find an IP address ... :)
If this is in fact has been the base
for the Linux resolver code, then the
following environment variable may
allow mapping the name of the host.conf
file into the /compat/linux tree:
RESOLV_HOST_CONF
If set, it will override the default filename
("/etc/host.conf") for the resolv+ configuration file.
(Tested this, and, well: It does work!!!)
BTW:
Any chance to get this into FreeBSD,
as a valid alternate syntax ?
Didn't check this, but AFAIK the
resolv+ package had been released
under a non-restrictive copyright.
This is an excerpt from the man page
of that enhanced resolver library:
---- 8< ---- cut here ---- 8< ---- cut here ---- 8< ---- cut here ---- 8< ----
The host.conf file should contain one configuration keyword
per line, followed by appropriate configuration information.
The keywords recognized are order , trim , multi , and nos-
poof . Each keyword is described seperately below.
order
This keyword specifies how host lookups are to be per-
formed. It should be followed by one or more lookup
methods, seperated by commas. Valid methods are bind ,
hosts and nis .
trim This keyword may be listed more than once. Each time
it should be followed by a single domain name, with the
leading dot. When set, the resolv+ library will
automatically trim the given domain name from the end
of any hostname resolved via DNS. This is intended for
use with local hosts and domains.
multi
Valid values are on and off . If set to "on," the
resolv+ library will return all valid addresses for a
host that appears in the /etc/hosts file, instead of
only the first. This is off by default, as it may
cause a substantial performance loss at sites with
large hosts files.
nospoof
Valid values are on and off . If set to "on," the
resolv+ library will attempt to prevent hostname spoof-
ing to enhance the security of rlogin and rsh. It
works as follows: after performing a host address
lookup, resolv+ will perform a hostname lookup for that
address. If the two hostnames do not match, the query
will fail.
alert
If this option is set to "on" and the nospoof option is
also set, resolv+ will log a warning of the error via
the syslog facility.
[ ... ]
AUTHOR
The original BIND resolver library comes from the University
of California at Berkeley's Computer Science Research Group.
The resolv+ modifications were made (in roughly chronologi-
cal order) by Bill Wisner, Patrick Gosling, Chris Metcalf,
John DiMarco and J. Porter Clark.
---- 8< ---- cut here ---- 8< ---- cut here ---- 8< ---- cut here ---- 8< ----
Regards, STefan
--
Stefan Esser, Zentrum fuer Paralleles Rechnen Tel: +49 221 4706021
Universitaet zu Koeln, Weyertal 80, 50931 Koeln FAX: +49 221 4705160
==============================================================================
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