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151 lines
3.8 KiB
151 lines
3.8 KiB
.\" $Id: rblcheck.1,v 1.1 2005/04/24 23:14:23 mjt Exp $
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.\" rblckeck manpage
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.\"
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.\" Copyright (C) 2005 Michael Tokarev <mjt@corpit.ru>
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.\" This file is part of UDNS library, an async DNS stub resolver.
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.\"
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.\" This library is free software; you can redistribute it and/or
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.\" modify it under the terms of the GNU Lesser General Public
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.\" License as published by the Free Software Foundation; either
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.\" version 2.1 of the License, or (at your option) any later version.
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.\"
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.\" This library is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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.\" Lesser General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU Lesser General Public
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.\" License along with this library, in file named COPYING.LGPL; if not,
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.\" write to the Free Software Foundation, Inc., 59 Temple Place,
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.\" Suite 330, Boston, MA 02111-1307 USA
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.TH rblckeck 1 "Apr 2005" "User Utilities"
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.SH NAME
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rblckeck \- DNSBL lookup utility
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.SH SYNOPSYS
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.B rblcheck
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.RB [\| \-s
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.IR zone \|]
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.RB [\| \-S
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.IR zone\-file \|]
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.RB [\| \-c \|]
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.RB [\| \-tmvq \|]
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.RB [\| \-n
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.IR nsaddr \|]
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.IR address \|.\|.\|.
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.SH DESCRIPTION
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.B rblcheck
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is a simple command-line to perform DNSBL (DNS-based blocklists) lookups.
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For every IP address (or a name, in which case it will be resolved to an
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address first), the utility verifies whenever it is listed in a (list of)
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DNS blocklists specified with
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.B \-s
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or
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.B \-S
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options, optionally obtains text assotiated with the listing (usually it
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is either some description about the reason of the listing or an URL
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referring to such a description), and displays results on standard output.
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.PP
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The program is implemented on top of
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.BR udns (3)
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library.
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.SH OPTIONS
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The following options are recognized by
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.BR rblcheck :
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.TP
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.B \-s \fIzone\fR
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add the given \fIzone\fR DNSBL name to the list of active zones.
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.TP
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.B \-S \fIzone-file\fR
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add list of zones from the named \fIzone-file\fR to the list of
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active zones (the file specifies one zone as the first word on a
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line, empty lines and lines starting with `#' character are ignored).
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.TP
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.B \-c
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reset active zone list.
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.TP
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.B \-v
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be more verbose, produce more detailed output.
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.TP
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.B \-q
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the opposite for \fB\-v\fR -- produce less detailed output.
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.TP
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.B \-t
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obtain text for listed addresses.
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.TP
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.B \-n \fInsaddr\fR
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Use the given nameserver (given as IPv4 or IPv6 address) instead of the
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default. The same effect may be achieved by setting $NSCACHEIP environment
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variable.
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.TP
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.B \-m
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stop after first hit, ie after the first address which is found to be
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listed.
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.TP
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.B \-h
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print short help and exit.
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.PP
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If no
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.BR \-s ,
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.BR \-S
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and
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.B \-c
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options are given,
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.B rblcheck
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will try to obtain list of zones using $RBLCHECK_ZONES environment variable,
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or ~/.rblcheckrc, or /etc/rblckechrc files, in that order. If no zones are
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found, it will exit unsuccessefully.
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.SH "RETURN VALUE"
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When no addresses given are listed and no errors occured,
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.B rblcheck
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exits with code 0. If at least one address is listed,
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.B rblcheck
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returns 100. In case of DNS errors,
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.B rblcheck
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returns 2.
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.SH ENVIRONMENT
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.TP
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.B $RBLCHECK_ZONES
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if no
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.BR \-s ,
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.B \-S
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or
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.B \-c
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option is given,
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.B rblcheck
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tries this variable to obtain list of DNSBL zones to check against.
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.SH FILES
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.TP
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$HOME/.rblcheckrc and /etc/rblcheckrc
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if no
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.BR \-s ,
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.B \-S
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or
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.B \-c
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option is given, and no $RBLCHECK_ZONES environment variable is set,
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.B rblcheck
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will try the two files (the first one that exists) to obtain list of
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DNSBL zones to check against.
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Each line specifies one zone (only first word in each line is used).
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Empty lines and lines starting with `#' character are ignored.
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.SH "SEE ALSO"
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.BR dnsget (1)
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.BR resolv.conf (5)
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.BR udns (3).
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.SH AUTHOR
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This program and manual pages are written by Michael Tokarev.
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