08-02-2008
You want to use raw sockets.
Search google for "raw sockets" or "SOCK_RAW" or "PF_PACKET"
If you're programming C in Linux, there are structs that easily let you alter the whole tcp/udp/icmp/igmp/whatever header and inject packets at will. This can also be used for communication over closed ports and other obscure stuff (if you create a listening raw socket, you'll have yourself a "sniffer", and with that you can analyze data packets that arrive even on closed tcp ports)
Last edited by Neo; 08-02-2008 at 07:10 PM..
Reason: Deleted unnecessary editorial comment
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LEARN ABOUT DEBIAN
sys::statistics::linux::sockstats
Sys::Statistics::Linux::SockStats(3pm) User Contributed Perl Documentation Sys::Statistics::Linux::SockStats(3pm)
NAME
Sys::Statistics::Linux::SockStats - Collect linux socket statistics.
SYNOPSIS
use Sys::Statistics::Linux::SockStats;
my $lxs = Sys::Statistics::Linux::SockStats->new;
my $stat = $lxs->get;
DESCRIPTION
Sys::Statistics::Linux::SockStats gathers socket statistics from the virtual /proc filesystem (procfs).
For more information read the documentation of the front-end module Sys::Statistics::Linux.
SOCKET STATISTICS
Generated by /proc/net/sockstat.
used - Total number of used sockets.
tcp - Number of tcp sockets in use.
udp - Number of udp sockets in use.
raw - Number of raw sockets in use.
ipfrag - Number of ip fragments in use (only available by kernels > 2.2).
METHODS
new()
Call "new()" to create a new object.
my $lxs = Sys::Statistics::Linux::SockStats->new;
It's possible to set the path to the proc filesystem.
Sys::Statistics::Linux::SockStats->new(
files => {
# This is the default
path => '/proc',
sockstat => 'net/sockstat',
}
);
get()
Call "get()" to get the statistics. "get()" returns the statistics as a hash reference.
my $stat = $lxs->get;
EXPORTS
No exports.
SEE ALSO
proc(5)
REPORTING BUGS
Please report all bugs to <jschulz.cpan(at)bloonix.de>.
AUTHOR
Jonny Schulz <jschulz.cpan(at)bloonix.de>.
COPYRIGHT
Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-03-09 Sys::Statistics::Linux::SockStats(3pm)