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diff --git a/man5/host.conf.5 b/man5/host.conf.5 deleted file mode 100644 index 1f88665bc..000000000 --- a/man5/host.conf.5 +++ /dev/null @@ -1,204 +0,0 @@ -.\" Copyright (c) 1997 Martin Schulze (joey@infodrom.north.de) -.\" Much of the text is copied from the manpage of resolv+(8). -.\" -.\" SPDX-License-Identifier: GPL-2.0-or-later -.\" -.\" 2003-08-23 Martin Schulze <joey@infodrom.org> Updated according to glibc 2.3.2 -.TH host.conf 5 (date) "Linux man-pages (unreleased)" -.SH NAME -host.conf \- resolver configuration file -.SH DESCRIPTION -The file -.I /etc/host.conf -contains configuration information specific to the resolver library. -It should contain one configuration keyword per line, followed by -appropriate configuration information. -The following keywords are recognized: -.TP -.I trim -This keyword may be listed more than once. -Each time it should be -followed by a list of domains, separated by colons (\[aq]:\[aq]), semicolons -(\[aq];\[aq]) or commas (\[aq],\[aq]), with the leading dot. -When set, the -resolver 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. -(Related note: -.I trim -will not affect hostnames gathered via NIS or the -.BR hosts (5) -file. -Care should be taken to -ensure that the first hostname for each entry in the hosts file is -fully qualified or unqualified, as appropriate for the local -installation.) -.TP -.I multi -Valid values are -.IR on " and " off . -If set to -.IR on , -the resolver library will return all valid addresses for a host that -appears in the -.I /etc/hosts -file, -instead of only the first. -This is -.I off -by default, as it may cause a substantial performance loss at sites -with large hosts files. -.TP -.I reorder -Valid values are -.IR on " and " off . -If set to -.IR on , -the resolver library -will attempt to reorder host addresses so that local addresses -(i.e., on the same subnet) are listed first when a -.BR gethostbyname (3) -is performed. -Reordering is done for all lookup methods. -The default value is -.IR off . -.SH ENVIRONMENT -The following environment variables can be used to allow users to -override the behavior which is configured in -.IR /etc/host.conf : -.TP -.B RESOLV_HOST_CONF -If set, this variable points to a file that should be read instead of -.IR /etc/host.conf . -.TP -.B RESOLV_MULTI -Overrides the -.I multi -command. -.TP -.B RESOLV_REORDER -Overrides the -.I reorder -command. -.TP -.B RESOLV_ADD_TRIM_DOMAINS -A list of domains, -separated by -colons (\[aq]:\[aq]), semicolons (\[aq];\[aq]), or commas (\[aq],\[aq]), -with the leading dot, -which will be added to the list of domains that should be trimmed. -.TP -.B RESOLV_OVERRIDE_TRIM_DOMAINS -A list of domains, -separated by -colons (\[aq]:\[aq]), semicolons (\[aq];\[aq]), or commas (\[aq],\[aq]), -with the leading dot, -which will replace the list of domains that should be trimmed. -Overrides the -.I trim -command. -.SH FILES -.TP -.I /etc/host.conf -Resolver configuration file -.TP -.I /etc/resolv.conf -Resolver configuration file -.TP -.I /etc/hosts -Local hosts database -.SH NOTES -The following differences exist compared to the original implementation. -A new command -.I spoof -and a new environment variable -.B RESOLV_SPOOF_CHECK -can take arguments like -.IR off ", " nowarn ", and " warn . -Line comments can appear anywhere and not only at the beginning of a line. -.SS Historical -The -.BR nsswitch.conf (5) -file is the modern way of controlling the order of host lookups. -.P -In glibc 2.4 and earlier, the following keyword is recognized: -.TP -.I order -This keyword specifies how host lookups are to be performed. -It should be followed by one or more lookup methods, separated by commas. -Valid methods are -.IR bind ", " hosts ", and " nis . -.TP -.B RESOLV_SERV_ORDER -Overrides the -.I order -command. -.P -.\" commit 7d68cdaa4f748e87ee921f587ee2d483db624b3d -Since glibc 2.0.7, and up through glibc 2.24, -the following keywords and environment variable -have been recognized but never implemented: -.TP -.I nospoof -Valid values are -.IR on " and " off . -If set to -.IR on , -the resolver library will attempt to prevent hostname spoofing to -enhance the security of -.BR rlogin " and " rsh . -It works as follows: after performing a host address lookup, -the resolver library will perform a hostname lookup for that address. -If the two hostnames -do not match, the query fails. -The default value is -.IR off . -.TP -.I spoofalert -Valid values are -.IR on " and " off . -If this option is set to -.I on -and the -.I nospoof -option is also set, -the resolver library will log a warning of the error via the -syslog facility. -The default value is -.IR off . -.TP -.I spoof -Valid values are -.IR off ", " nowarn ", and " warn . -If this option is set to -.IR off , -spoofed addresses are permitted and no warnings will be emitted -via the syslog facility. -If this option is set to -.IR warn , -the resolver library will attempt to prevent hostname spoofing to -enhance the security and log a warning of the error via the syslog -facility. -If this option is set to -.IR nowarn , -the resolver library will attempt to prevent hostname spoofing to -enhance the security but not emit warnings via the syslog facility. -Setting this option to anything else is equal to setting it to -.IR nowarn . -.TP -.B RESOLV_SPOOF_CHECK -Overrides the -.IR nospoof ", " spoofalert ", and " spoof -commands in the same way as the -.I spoof -command is parsed. -Valid values are -.IR off ", " nowarn ", and " warn . -.SH SEE ALSO -.BR gethostbyname (3), -.BR hosts (5), -.BR nsswitch.conf (5), -.BR resolv.conf (5), -.BR hostname (7), -.BR named (8) |