Provided by: fpdns_0.9.3-3_all
fpdns - DNS server fingeprinting tool
fpdns [ -c ] [ -d ] [ -f ] [ -F nchild ] [ -p port ] [ -Q srcaddr ] [ -r retry ] [ -s ] [ -S separator ] [ -t timeout ] [ -v ] [server(s)]
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.
-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
fpdns was written by Roy Arends and Jakob Schlyter.