NetPacket::Ethernet - Assemble and disassemble ethernet packets.
version 1.7.2
use NetPacket::Ethernet; $eth_obj = NetPacket::Ethernet->decode($raw_pkt); $eth_pkt = NetPacket::Ethernet->encode(params...); # Not implemented $eth_data = NetPacket::Ethernet::strip($raw_pkt);
NetPacket::Ethernet provides a set of routines for assembling and disassembling packets using the Ethernet protocol.
NetPacket::Ethernet
NetPacket::Ethernet->decode([RAW PACKET])
Decode the raw packet data given and return an object containing instance data. This method will quite happily decode garbage input. It is the responsibility of the programmer to ensure valid packet data is passed to this method.
NetPacket::Ethernet->encode(param => value)
Return an ethernet packet encoded with the instance data specified. Not implemented.
NetPacket::Ethernet::strip([RAW PACKET])
Return the encapsulated data (or payload) contained in the ethernet packet. This data is suitable to be used as input for other NetPacket::* modules.
NetPacket::*
This function is equivalent to creating an object using the decode() constructor and returning the data field of that object.
decode()
data
The instance data for the NetPacket::Ethernet object consists of the following fields.
The source MAC address for the ethernet packet as a hex string.
The destination MAC address for the ethernet packet as a hex string.
The protocol type for the ethernet packet.
The payload for the ethernet packet.
none
ETH_TYPE_IP ETH_TYPE_ARP ETH_TYPE_APPLETALK ETH_TYPE_SNMP ETH_TYPE_IPv6 ETH_TYPE_PPP
The following tags group together related exportable items.
:types
:strip
Import the strip function eth_strip which is an alias for NetPacket::Ethernet::strip
eth_strip
NetPacket::Ethernet::strip
:ALL
All the above exportable items.
The following script dumps ethernet frames by mac address and protocol to standard output.
#!/usr/bin/perl -w use strict; use Net::PcapUtils; use NetPacket::Ethernet; sub process_pkt { my($arg, $hdr, $pkt) = @_; my $eth_obj = NetPacket::Ethernet->decode($pkt); print("$eth_obj->{src_mac}:$eth_obj->{dest_mac} $eth_obj->{type}\n"); } Net::PcapUtils::loop(\&process_pkt);
encode()
Copyright (c) 2001 Tim Potter and Stephanie Wehner.
Copyright (c) 1995,1996,1997,1998,1999 ANU and CSIRO on behalf of the participants in the CRC for Advanced Computational Systems ('ACSys').
This module is free software. You can redistribute it and/or modify it under the terms of the Artistic License 2.0.
This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.
Tim Potter <tpot@samba.org>
To install NetPacket, copy and paste the appropriate command in to your terminal.
cpanm
cpanm NetPacket
CPAN shell
perl -MCPAN -e shell install NetPacket
For more information on module installation, please visit the detailed CPAN module installation guide.