fpdns man page

fpdns — DNS server fingeprinting tool

Synopsis

fpdns [ -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

-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)

Info

2014-01-08 perl v5.24.0 User Contributed Perl Documentation