[TCPDUMP] Connection lost


 
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Operating Systems Linux Ubuntu [TCPDUMP] Connection lost
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Old 05-22-2012
Lightbulb [TCPDUMP] Connection lost

I'm on Ubuntu – but it's the same on Debian.
I'm using tcpdump in order to track the connection of computers on my private network. At some point, the internet connection of the computers launching the script is lost as well as the targeted computers.

Here's the command line:
Code:
tcpdump -i wlan0 -A src host IP_TARGET

I tried with netsniff-ng, but the issue is the same.

The script that I refer to deviates the connection from the targeted computers to my computer (by sending ARP request) and grep the cookies from the output of tcpdump.
When I get the response packets, I read them and immediately redirect them to the router. Also, the connection is lost sometimes immediately, sometimes after a few minutes.

Last edited by Skirmjan; 05-22-2012 at 10:54 AM..
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Protocol::Connection(3pm)				User Contributed Perl Documentation				 Protocol::Connection(3pm)

NAME
X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections SYNOPSIS
# In connection object module package X11::Protocol::Connection::CarrierPigeon; use X11::Protocol::Connection; @ISA = ('X11::Protocol::Connection'); sub open { ... } sub give { ... } sub get { ... } sub fh { ... } ... # In program $connection = X11::Protocol::Connection::CarrierPigeon ->open($host, $display_number); $x = X11::Protocol->new($connection); $connection->give($data); $reply = unpack("I", $connection->get(4)); use IO::Select; $sel = IO::select->new($connection->fh); if ($sel->can_read == $connection->fh) ... DESCRIPTION
This module is an abstract base class for the various X11::Protocol::Connection::* modules that provide connections to X servers for the X11::Protocol module. It provides stubs for the following methods: open $conn = X11::Protocol::Connection::Foo->open($host, $display_num) Open a connection to the specified display (numbered from 0) on the specified $host. give $conn->give($data) Send the given data to the server. Normally, this method is used only by the protocol module itself. get $data = $conn->get($n) Read $n bytes of data from the server. Normally, this method is used only by the protocol module itself. fh $filehandle = $conn->fh Return an object suitable for use as a filehandle. This is mainly useful for doing select() and other such system calls. AUTHOR
Stephen McCamant <SMCCAM@cpan.org>. SEE ALSO
perl(1), X11::Protocol, X11::Protocol::Connection::Socket, X11::Protocol::Connection::FileHandle, X11::Protocol::Connection::INETSocket, X11::Protocol::Connection::UNIXSocket, X11::Protocol::Connection::INETFH, X11::Protocol::Connection::UNIXFH. perl v5.14.2 2003-01-27 Protocol::Connection(3pm)