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 ============================================================================== http://www.zpr.uni-koeln.de/~se <se@ZPR.Uni-Koeln.DE>
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