I have a question, I've been playing around with tcpdump, and noticed my machine making numerous rdns look ups. They are displayed like:
My question is, if dns works based on numerical addresses... why does my machine care what the domain name of a site is..? And where are these requests coming from? I'm obviously not the one typing the addresses into my browser?
Guys need some advice on how to check some of the questions below?
i'm running on an open VMS platform... which i am an idiot to...
appreciate if anyone can give some hints or source on how to check on..
a script that is running on cron job... but doesn't run as the login user name..
1. why... (6 Replies)
hi guys
Well, i need to have a report generation script or any script which will show me all the content/information of a file when i run that script.
Please help me on this isssue at the earliest.As i am little bit aware of scripting.Thanks in advance!
regards
ash (4 Replies)
hi all,
please tell me clearly the difference between
exit 1 and exit 2
one more question
i want to know the difference between some basic shells like bsh, csh, ksh, bash.
i refered in net i get wast of text pages can any one give me any link to show the diff precisely or any blogs.... (2 Replies)
Any help on like where to get started on this? I'm just confused.
1. The problem statement, all variables and given/known data:
Enter text here.Queries to satisfy these two report requests (use your CCI database):
Retrieve all rows of active inventory where current on hands is less than... (0 Replies)
can these 3 be combined into 1 query?
createtablea1as
selecta.tps_Res_nb,
b.tkt_prod_cd,
b.tkt_prod_typ_nm,
b.prod_intrnl_ds,
b.tkt_prod_typ_nm AS TKT_ENTL_NM,
casewhen b.tkt_prod_nm isnotnullthen b.tkt_prod_nm
when b.tkt_prod_nm isnulland b.prod_intrnl_ds isnotnullthen... (1 Reply)
Is there any way to see how many queries come into our external DNS server? In looking at DNS providers, most of them base pricing on number of queries per month so I just wanted to see if you had any idea/way of gathering that data? A rough ballpark figure would even work.
Our DNS server is... (1 Reply)
Hi,
1) How to get exact permissions, group names for files while transferring with FTP
2) Is there any command to transfer entire directory and sub directories.
Thanks (1 Reply)
Hi,
I would like to know on one server how many mouting can be done? wheather there is limitation on number of mounting?
wheather it is possible to increase NFS Performance? if yes then which parameters needs to given while mounting? (3 Replies)
Discussion started by: manoj.solaris
3 Replies
LEARN ABOUT MOJAVE
net::dns::question5.18
Net::DNS::Question(3) User Contributed Perl Documentation Net::DNS::Question(3)NAME
Net::DNS::Question - DNS question record
SYNOPSIS
use Net::DNS::Question;
$question = new Net::DNS::Question('example.com', 'A', 'IN');
DESCRIPTION
A Net::DNS::Question object represents a record in the question section of a DNS packet.
METHODS
new
$question = new Net::DNS::Question('example.com', 'A', 'IN');
$question = new Net::DNS::Question('example.com');
$question = new Net::DNS::Question('192.0.32.10', 'PTR', 'IN');
$question = new Net::DNS::Question('192.0.32.10');
Creates a question object from the domain, type, and class passed as arguments. One or both type and class arguments may be omitted and
will assume the default values shown above.
RFC4291 and RFC4632 IP address/prefix notation is supported for queries in both in-addr.arpa and ip6.arpa namespaces.
decode
$question = decode Net::DNS::Question($data, $offset);
($question, $offset) = decode Net::DNS::Question($data, $offset);
Decodes the question record at the specified location within a DNS wire-format packet. The first argument is a reference to the buffer
containing the packet data. The second argument is the offset of the start of the question record.
Returns a Net::DNS::Question object and the offset of the next location in the packet.
An exception is raised if the object cannot be created (e.g., corrupt or insufficient data).
encode
$data = $question->encode( $offset, $hash );
Returns the Net::DNS::Question in binary format suitable for inclusion in a DNS packet buffer.
The optional arguments are the offset within the packet data where the Net::DNS::Question is to be stored and a reference to a hash table
used to index compressed names within the packet.
name
$name = $question->name;
Internationalised domain name corresponding to the qname attribute.
Decoding non-ASCII domain names is computationally expensive and undesirable for names which are likely to be used to construct further
queries.
When required to communicate with humans, the 'proper' domain name should be extracted from a query or reply packet.
$query = new Net::DNS::Packet( $example, 'ANY' );
$reply = $resolver->send($query) or die;
($question) = $reply->question;
$name = $question->name;
qname, zname
$qname = $question->qname;
$zname = $question->zname;
Canonical ASCII domain name as required for the query subject transmitted to a nameserver. In dynamic update packets, this attribute is
known as zname() and refers to the zone name.
qtype, ztype
$qtype = $question->qtype;
$ztype = $question->ztype;
Returns the question type attribute. In dynamic update packets, this attribute is known as ztype() and refers to the zone type.
qclass, zclass
$qclass = $question->qclass;
$zclass = $question->zclass;
Returns the question class attribute. In dynamic update packets, this attribute is known as zclass() and refers to the zone class.
print
$object->print;
Prints the record to the standard output. Calls the string() method to get the string representation.
string
print "string = ", $question->string, "
";
Returns a string representation of the question record.
COPYRIGHT
Copyright (c)1997-2002 Michael Fuhr.
Portions Copyright (c)2002-2004 Chris Reinhardt.
Portions Copyright (c)2003,2006-2011 Dick Franks.
All rights reserved.
This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
perl, Net::DNS, Net::DNS::DomainName, Net::DNS::Packet, RFC 1035 Section 4.1.2
perl v5.18.2 2014-01-16 Net::DNS::Question(3)