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Man Pages


Manual Reference Pages  -  FPDNS (1)

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NAME

fpdns - DNS server fingeprinting tool

CONTENTS

SYNOPSIS

<B>fpdnsB> [ <B>-dB> ] [ <B>-fB> ] [ <B>-FB> nchild ]
[ <B>-pB> port ] [ <B>-QB> srcaddr ] [ <B>-rB> retry ]
[ <B>-sB> ] [ <B>-SB> separator ] [ <B>-tB> timeout ] [ <B>-vB> ] [server(s)]

DESCRIPTION

<B>fpdnsB> is a program that remotely determines DNS server versions. It does this by sending a series of borderline DNS queries which are compared against a table of responses and server versions.

False positives or incorrect versions may be reported when trying to identify a set of servers residing behind a load-balancing apparatus where the servers are of different implementations, when a specific implementation behaves like a forwarder, behind a firewall without statefull inspection or without Application Intelligence.

OPTIONS

<B>-dB> Enable debugging. Off by default.
<B>-DB> Check all authoritative servers of the specified domain name.
<B>-fB> Force checking of CH TXT version. Off by default.
<B>-FB> nchild Maximum number of forked child processes. Defaults to 10.
<B>-pB> port Port to query remote nameserver on. Default is 53.
<B>-QB> srcaddr Set the source IP address to use.
<B>-rB> retry Number of attempt to retry fingerprints. Defaults to 1.
<B>-sB> Short display form. Useful for surveys.
<B>-SB> Separator. Defaults to .
<B>-tB> timeout Set the query timeout in seconds. Defaults to 5.
<B>-TB> Use TCP instead of UDP.
<B>-vB> Show version of fpdns.
server IP address or name to query. Alternatively may be ’-’ to read from a list of these from stdin

AUTHORS

fpdns was written by Roy Arends and Jakob Schlyter.

SEE ALSO

perl(1), Net::DNS(1)
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perl v5.20.3 FPDNS (1) 2012-10-19

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