Programming :: Perl Disassembling DNS Packet?

May 11, 2010

I'm a newbie trying to modify a DNS-formatted UDP packet. I am piping DNS replies through a firewall queue where I get the packet with $udp_obj->data provided by NetPacket::UDP. Is there a command line application that will break down the udp packet for me so I can extract an answer? Cpan doesn't have a module to do this. One can *create* udp packets programmatically or get them off of libpcap, but I don't need either.

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Programming :: Perl - UDP Server Receive / Send Packet To Host

Apr 1, 2010

I have found many examples out on the www for creating udp servers with sockets. The problem I am running into is after I receive the packet from a host I need to be able to send a custom made packet(I'm using RawIP / NetPacket to make my packet) back to this host. The only way to do this is seemingly through the send() function. This function however doesn't appear to allow me to specify which host to send my packet to.

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Programming :: Build Ip Packet With C,socket Programming?

Jan 30, 2011

How can we build a packet using C?we have a structure called sockaddr_in which is use to for IPv4,so that we can define address,port and etc in this way:

Code:
struct sockaddr_in sock;
sock.sin_family=AF_INET;

[code]...

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Programming :: Create Own Packet In NS2?

Apr 14, 2011

I want to create my own packet for aodv so how can i do? from where i should start?

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Programming :: How To Tunnel Packet

Apr 19, 2011

I want to develop program to put (tunnel) sniffed packets into another packet, i already have sniffer code to capture packet, can some one give me use full site or simple code to do that.

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Ubuntu Networking :: Send The Keys Or Value As The Packet Data (content Of The Packet) In Ns-2 (for Wireless Environment)

Jul 12, 2010

I am the new user to ns-2. I would like to know is it possible to send the keys or some value as the packet data (content of the packet) in ns-2 (for wireless environment).

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CentOS 5 Server :: Authenticate/Decrypt Packet Error: Packet HMAC Authentication Failed

Sep 17, 2009

I got a problem with my CentOS server. Somebody told me OpenVPN Requires different changes inside my firewall settings. That could be the problem why openvpn wont load..I receive this error on my CentOS panel when im trying to connect into the centos openvpn (with my winxp pc):

Thu Sep 17 20:31:36 2009 TLS Error: incoming packet authentication failed from 84.xx.62.122:2622
Thu Sep 17 20:31:38 2009 Authenticate/Decrypt packet error: packet HMAC authentication failed
Thu Sep 17 20:31:38 2009 TLS Error: incoming packet authentication failed from 84.xx.62.122:2622

[code]....

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Programming :: How To Access Packet Timestamp

Jan 8, 2011

I want to access the timestamp field of the packet being sent or received. I am not getting clear idea as to which ioctl I should use, and how it should be used in the program. Anyone explain rough flow of the program for accessing the timestamp.

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Programming :: Save A Packet In The Memory

Feb 7, 2011

i'm sniffing network packets with pcap in ubuntu, i need to save these packets somewhere in the memory and after a while read ans send them. how can i do this?

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Programming :: Send A Packet Through Sockets C++

Feb 1, 2011

Can someone help me with this problem,trying to send a packet,using tcp/ip,the packet should look like this:

Code:
field 1: SOCKS protocol version, 1 byte (0x05 for this version)
field 2: status, 1 byte:
0x00 = request granted
0x01 = general failure
0x02 = connection not allowed by ruleset
0x03 = network unreachable
0x04 = host unreachable
0x05 = connection refused by destination host
0x06 = TTL expired
0x07 = command not supported / protocol error
0x08 = address type not supported
field 3: reserved, must be 0x00
field 4: address type, 1 byte:
0x01 = IPv4 address
0x03 = Domain name
0x04 = IPv6 address
field 5: destination address of
4 bytes for IPv4 address
1 byte of name length followed by the name for Domain name
16 bytes for IPv6 address
field 6: network byte order port number, 2 bytes
and this is my code:

Code:
int domainLen = strlen(domain);
char reply[domainLen + 7];
reply[0] = 5; // version
reply[1] = 0; // succed
reply[2] = 0; // reserved
reply[3] = 3; // its a domain
reply[4] = domainLen;; // lenght of domain
for(int j = 0; j < domainLen; ++j)
{
reply[j + 5] = domain[j];
}
reply[5 + domainLen] = 80; // port
reply[20] = '�';
Send(reply, sizeof(reply));
domain is "www.google.com". Am I doing it right ? I dont know much about bits.

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Programming :: Store A Packet In Buffer?

May 19, 2010

writing a code in C program for debugging error and sendingror messagein routingprotocols. please answer with code

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Programming :: Capture Packet From DMA Ring Buffer?

Jul 21, 2010

I wanna capture network packets from DMA ring buffer, just like netfilter. i wanna capture it from DMA, because i wanna get MAC address of I/O packets, so netfilter not included MAC address of out going packets because its on IP level and Ebtables is like that too. how i can capture network packets from DMA ring buffer.

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Programming :: ICMP Packet Recieving Using Hook Function

Oct 7, 2010

I want to receive an icmp packet using net filter hook function. A string will be printed if an icmp packet is received.I am able to print the string. but the packet loss in the log message shows 100%packet loss.So i changer hooknum = NF_IP_FORWARD.but still its not working.I want to get log message as received 100%

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Programming :: Send A UDP Syslog Packet With Source Port Set To 514

Jan 25, 2010

I am trying to generate a UDP syslog packet from my C application. But I am facing a problem with a Cisco Router ACE that does not like the Source Port being '0' and thus drops the packet.How can I specify the Source Port in the UDP header to '514' as stated in RFC3164 (Section 2: Transport Layer Protocol)? "It is RECOMMENDED that the source port also be 514 to indicate that the message is from the syslog process of the sender"

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Programming :: UDP Packet Loss - Out Of Sequence - Duplication Simulator ?

Oct 13, 2010

I'm beginning to write a custom RTP implementation and want to test its resilience to UDP traffic. I've searched on the web and all the links I can find are for analysing actual traffic, not generating it or messing it up.

Does anyone know of any software (preferably free software) that will, for example, take actual UDP traffic and drop packets, duplicate some and make some arrive late/out of sequence?

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Programming :: Php/HttpRequest/https: A TLS Packet With Unexpected Length Was Received?

May 29, 2010

I'm working on an application that makes http requests using HttpRequest and it's been doing what I need so far without a problem. Now I need to make https requests as well and when I try to make the request, i get this error message:

Code:
Fatal error: Uncaught exception 'HttpInvalidParamException' with message 'Empty or too short HTTP message: ''' in /home/antoranz/waneesia/html/index.php:0 inner exception 'HttpRequestException' with message 'SSL connect error; gnutls_handshake() failed: A TLS packet with unexpected length was received. (https://www.paypal.com/)' in /home/antoranz/waneesia/html/index.php:104 Stack trace: #0 /home/antoranz/waneesia/html/index.php(0): HttpRequest->send() #1 {main} thrown in /home/antoranz/waneesia/html/index.php on line 0
What's going on?

The project: url

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Programming :: Socket Programming In Module Perl

Jul 21, 2010

Where is the perl module for programming with sockets?

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Programming :: Cannot Install Perl / Tk

May 9, 2010

I just downloaded Tk-804.028 and try to install it (according to the README.linux) but I get:

> perl Makefile.PL
/opt/ActivePerl-5.10/bin/perl-static is installed in /opt/ActivePerl-5.10/lib okay
PPM for perl5.010001
Test Compiling config/perlrx.c
Test Compiling config/pmop.c
Test Compiling config/pregcomp2.c

[code]...

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Programming :: Perl Tutorial To Use?

May 18, 2011

Any recommendations on what Perl tutorial to use?

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Programming :: Converting MB/TB To GB In Perl?

Jan 30, 2010

I am taking an input from the user for free and Used capacity in a disk. I wish to convert Input entered in MBTB to GB and this is how i am doing it.

Code:

<some code>
print "Enter Total disk space";
$tot = <STDIN>;
convert($tot);

[code]...

how do i pass the value of conv[0] after conversion back to $tot or $use such that they contain only value which is in GB?

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Programming :: How To Get Perl Qt4 Working

Jul 24, 2010

I really would like Perl Qt4 bindings. The best I could find is this:[URL]The problem is that the sources would not compile, and the RPMs are for 32-bit machines.Is there really no such thing as good Perl Qt4 bindings?

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Programming :: MP3 - Tag And Perl Script

Mar 27, 2011

I am a newbie on linux and just searching everything about perl scripting and modules nearly 3-4 days. I need a perl script but one of not easy to find on searching google. Okay now I need a perl script which create or recreate (edit) id3 tags (artist, comment, album, year, cover) of mp3 files stored on my linux centos server. I installed MP3::Tag version 1.13 pearl module to my server. I Searched tutorials about how to use it, finally I get through reading id3 tag of mp3 file but not achieve to modify it or create a new id3tag.

These are the details:
I have a mp3 file called 1.mp3 this script will process that '1.mp3' file read its id3tag if there is one, than modify or create id3tag for it by my fix artist name for example:
'1.mp3' files id3 tag details are like this
Artist: Dj xx
Year:2010
Title:yyyyy
Comment:eerwer
Cover: x.jpg

Now via this perl script which uses MP3::TAG I will change it's
artist as YYY
Title:ttt
Comment:cool
Cover:t.jpg
these are gonna be my fixed values. I mean all '1.mp3' file will have same artist based on script value.

The reason of this script is I will share Dj podcasts on my server and Dj's would have upload their mp3's which has got different id3 tags and cover pics. etc. I want to create more organized podcasts of them by the way I would trigger this perl script via Cronjob.

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Programming :: How To Generate MD5 / Sha-1 With Perl

Mar 31, 2010

How can I generate a md5 or sha-1 code with perl?

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Programming :: Perl - Interpreter For Fib Numbers

Apr 1, 2010

As some of you know that I am new to this forum. I have another problem that I got stuck on. I have this file called "Fib.rbb" and my instructor told us to write an interpreter program by using Fib.rbb.

"You are to write an interpreter in Perl for Rongs Basic Basic (RBB) as explained in class. The BNF description for RBB and a test file called Fib.rbb are part of the RBB.zip file which is available in the Course Documents folder on blackboard. If you call your interpreter myIntp.pl, you would execute the program via perl myIntp.pl Fib.rbb

Code: Print "A few Fibonacci numbers:"

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Programming :: Unable To Find The Perl

Mar 9, 2011

Just installed Fedora 14. I wanted to try "Hello World" with perl. But where is it?

Code: [user]@user bin]$ ls

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Programming :: Perl From USB Pen To Run On Both Linux And Windows

May 23, 2011

Im somewhat new at perl and was wondering if there was a way to run a perl script or tool made from perl, from a USB pen that would work both on Linux and on Windows?

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Programming :: 404 Not Found With Perl/cgi Script

Jan 16, 2010

I writed my home.html page in /var/www with following form:

Quote:

<form action="/cgi-bin/login.cgi" method="get" class="form-font">
<label>Already you registered?</label><br/><hr/><br/>
<fieldset><br/>
<legend>Insert your account</legend>
Email: <input type="text" name="email"/><br/><br/>

[Code].....

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Programming :: Add Folder To Perl Path?

Jun 8, 2010

I'm the server guy which is why I don't know this, but were staging a new webserver and we use some custom perl scripts and as were moving the site over for testing, apache is blowing a perl error;Can't locate web.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at /home/mcp/htdocs/cgi-bin/newgraph.gif line 11.,Now I can copy that file local, but there are a bunch of things, so the question is how do you globally add a folder to the perl search path

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Programming :: Adding Mod-Perl And Using Apache ASP?

Sep 16, 2010

I have a debian lenny machine that I am trying to add mod_perl to and use apache asp on. I have had a range of failures on it. Is ther a way I can build apache2 with mod_perl in it? Instead of separate. Apache2 is built with some modules built in by default, how can I make mod_perl one of them?

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Programming :: Comparing Two Files In Perl ?

Oct 9, 2009

I would like to ask opinion from perl experts.

I want to compare 2 files and show the differences in a text file.

For example, if i open File A an B in notepad

File A:

File B:

Quote:

line3 is missing in File B

So if I did a File compare (line by line), the differences will be in line3, line4, line5, line 6.

But I dont want it to be like that.

I want it to be like this

Quote:

Can Text:: Diff able to perform the work.

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