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Top Forums Shell Programming and Scripting Bash script who maps IP with MAC address Post 303006451 by hermouche on Thursday 2nd of November 2017 10:45:40 AM
Old 11-02-2017
Quote:
Originally Posted by RudiC
Given a file as shown under item 2-, try
Code:
sed 's/ / -m --mac-source /; s/^/iptables -I FORWARD -s /; s/$/ -j ACCEPT/' file
iptables -I FORWARD -s 192.168.0.10 -m --mac-source xx:xx:xx:xx:xx:xx -j ACCEPT
iptables -I FORWARD -s 192.168.0.11 -m --mac-source aa:aa:aa:aa:aa:aa -j ACCEPT

Should this NOT satisfy your needs, please become way more precise & detailed with your specification.
OK, thank you very much RudiC,

It shows the match between the IP and the MAC Smilie

Now i want the result of your code to be part of the firewall. I mean with the following command:

Quote:
# iptables -L FORWARD
i should see:

Quote:
iptables -I FORWARD -s 192.168.0.10 -m --mac-source xx:xx:xx:xx:xx:xx -j ACCEPT
iptables -I FORWARD -s 192.168.0.11 -m --mac-source aa:aa:aa:aa:aa:aa -j ACCEPT
Thanks again for your help RudiC Smilie
 

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ARP(3pm)						User Contributed Perl Documentation						  ARP(3pm)

NAME
ARP - Perl extension for creating ARP packets SYNOPSIS
use Net::ARP; Net::ARP::send_packet('lo', # Device '127.0.0.1', # Source IP '127.0.0.1', # Destination IP 'aa:bb:cc:aa:bb:cc', # Source MAC 'aa:bb:cc:aa:bb:cc', # Destinaton MAC 'reply'); # ARP operation $mac = Net::ARP::get_mac("eth0"); print "$mac "; $mac = Net::ARP::arp_lookup($dev,"192.168.1.1"); print "192.168.1.1 has got mac $mac "; IMPORTANT Version 1.0 will break with the API of PRE-1.0 versions, because the return value of arp_lookup() and get_mac() will no longer be passed as parameter, but returned! I hope this decision is ok as long as we get a cleaner and more perlish API. DESCRIPTION This module can be used to create and send ARP packets and to get the mac address of an ethernet interface or ip address. send_packet() Net::ARP::send_packet('lo', # Device '127.0.0.1', # Source IP '127.0.0.1', # Destination IP 'aa:bb:cc:aa:bb:cc', # Source MAC 'aa:bb:cc:aa:bb:cc', # Destinaton MAC 'reply'); # ARP operation I think this is self documentating. ARP operation can be one of the following values: request, reply, revrequest, revreply, invrequest, invreply. The default ARP operation is reply. get_mac() $mac = Net::ARP::get_mac("eth0"); This gets the MAC address of the eth0 interface and stores it in the variable $mac. The return value is "unknown" if the mac cannot be looked up. arp_lookup() $mac = Net::ARP::arp_lookup($dev,"192.168.1.1"); This looks up the MAC address for the ip address 192.168.1.1 and stores it in the variable $mac. The return value is "unknown" if the mac cannot be looked up. SEE ALSO
man -a arp AUTHOR
Bastian Ballmann [ Balle@chaostal.de ] http://www.datenterrorist.de COPYRIGHT AND LICENSE
Copyright (C) 2004-2007 by Bastian Ballmann This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.1 or, at your option, any later version of Perl 5 you may have available. perl v5.14.2 2009-04-24 ARP(3pm)
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