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)
Check Out this Related Man Page
NSLOOKUP(1) BIND9 NSLOOKUP(1)NAME
nslookup - query Internet name servers interactively
SYNOPSIS
nslookup [-option] [name | -] [server]
DESCRIPTION
Nslookup is a program to query Internet domain name servers. Nslookup has two modes: interactive and non-interactive. Interactive mode
allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain.
Non-interactive mode is used to print just the name and requested information for a host or domain.
ARGUMENTS
Interactive mode is entered in the following cases:
1. when no arguments are given (the default name server will be used)
2. when the first argument is a hyphen (-) and the second argument is the host name or Internet address of a name server.
Non-interactive mode is used when the name or Internet address of the host to be looked up is given as the first argument. The optional
second argument specifies the host name or address of a name server.
Options can also be specified on the command line if they precede the arguments and are prefixed with a hyphen. For example, to change the
default query type to host information, and the initial timeout to 10 seconds, type:
nslookup -query=hinfo-timeout=10
Mac OS X NOTICE
The nslookup command does not use the host name and address resolution or the DNS query routing mechanisms used by other processes running
on Mac OS X. The results of name or address queries printed by nslookup may differ from those found by other processes that use the Mac OS
X native name and address resolution mechanisms. The results of DNS queries may also differ from queries that use the Mac OS X DNS routing
library.
INTERACTIVE COMMANDS
host [server]
Look up information for host using the current default server or using server, if specified. If host is an Internet address and the
query type is A or PTR, the name of the host is returned. If host is a name and does not have a trailing period, the search list is
used to qualify the name.
To look up a host not in the current domain, append a period to the name.
server domain
lserver domain
Change the default server to domain; lserver uses the initial server to look up information about domain, while server uses the current
default server. If an authoritative answer can't be found, the names of servers that might have the answer are returned.
root
not implemented
finger
not implemented
ls
not implemented
view
not implemented
help
not implemented
?
not implemented
exit
Exits the program.
set keyword[=value]
This command is used to change state information that affects the lookups. Valid keywords are:
all
Prints the current values of the frequently used options to set. Information about the current default server and host is also
printed.
class=value
Change the query class to one of:
IN
the Internet class
CH
the Chaos class
HS
the Hesiod class
ANY
wildcard
The class specifies the protocol group of the information.
(Default = IN; abbreviation = cl)
[no]debug
Turn on or off the display of the full response packet and any intermediate response packets when searching.
(Default = nodebug; abbreviation = [no]deb)
[no]d2
Turn debugging mode on or off. This displays more about what nslookup is doing.
(Default = nod2)
domain=name
Sets the search list to name.
[no]search
If the lookup request contains at least one period but doesn't end with a trailing period, append the domain names in the
domain search list to the request until an answer is received.
(Default = search)
port=value
Change the default TCP/UDP name server port to value.
(Default = 53; abbreviation = po)
querytype=value
type=value
Change the type of the information query.
(Default = A; abbreviations = q, ty)
[no]recurse
Tell the name server to query other servers if it does not have the information.
(Default = recurse; abbreviation = [no]rec)
retry=number
Set the number of retries to number.
timeout=number
Change the initial timeout interval for waiting for a reply to number seconds.
[no]vc
Always use a virtual circuit when sending requests to the server.
(Default = novc)
[no]fail
Try the next nameserver if a nameserver responds with SERVFAIL or a referral (nofail) or terminate query (fail) on such a
response.
(Default = nofail)
FILES
/etc/resolv.conf
SEE ALSO dig(1), host(1), named(8).
AUTHOR
Andrew Cherenson
COPYRIGHT
Copyright (C) 2004-2007, 2010 Internet Systems Consortium, Inc. ("ISC")
BIND9 Jun 30, 2000 NSLOOKUP(1)