FPDNS(1p)						User Contributed Perl Documentation						 FPDNS(1p)

NAME

       fpdns - DNS server fingeprinting tool

SYNOPSIS

       fpdns [ -c ] [ -d ] [ -f ] [ -F nchild ]
	  [ -p port ] [ -Q srcaddr ] [ -r retry ]
	  [ -s ]  [ -S separator ] [ -t timeout ] [ -v ] [server(s)]

DESCRIPTION

       fpdns 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

       -c   Where appropriate check CH TXT version. Off by default.

       -d   Enable debugging. Off by default.

       -D   Check all authoritative servers of the specified domain name.

       -f   Force checking of CH TXT version. Off by default.

       -F nchild
	    Maximum number of forked child processes. Defaults to 10.

       -p port
	    Port to query remote nameserver on. Default is 53.

       -Q srcaddr
	    Set the source IP address to use.

       -r retry
	    Number of attempt to retry fingerprints. Defaults to 1.

       -s   Short display form. Useful for surveys.

       -S   Separator. Defaults to " ".

       -t timeout
	    Set the query timeout in seconds. Defaults to 5.

       -T   Use TCP instead of UDP.

       -v   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)

perl v5.14.2							    2012-03-10								 FPDNS(1p)