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Re: IP to MAC mapping
Date: Thu Nov 28 2002 - 00:40:37 EST
If you have linux box you can also try this simple perl script
#!/usr/bin/perl
$pid=fork();
if($pid>0){die "Forked";}
else
{
while (1)
{
open(FileHND,"/proc/net/arp");
open(LogHND,">>$ARGV[0]") if $ARGV[0];
open(LogHND,">>&STDOUT") if !$ARGV[0];
while(<FileHND>)
{
@array = split(/\s+/);
if($array[0] =~ /^\d/){
if($list{$array[0]} && ($list{$array[0]} ne $array[3]))
{
print LogHND ("ARP Address $array[0] changed from $list{$array[0]} to $array[3]\n") ;
}
elsif($list{$array[0]} ne $array[3])
{
print LogHND "Adding $array[0]\n" if $ARGV[1] ne silent;
$list{$array[0]} = $array[3];
}}
}
close(FileHND);
sleep 3;
}
}
- Original Message ----- From: "Burton M. Strauss III" <bstrauss3@attbi.com> To: <security-basics@securityfocus.com> Cc: "Johan Denoyer" <jdenoy@digital-connexion.info> Sent: Friday, November 22, 2002 6:19 PM Subject: RE: IP to MAC mapping
> Understand that most OSes (perhaps not windows, but I wouldn't put it past
>
> Set up a small Linux or *nix box and use arpwatch - it's a daemon that
>
> -----Burton
>
> -----Original Message-----
> >
> Hi,
>
> we are currently looking into illegal usage of a protected network. We are
> managing a class C network, and we would like to be able to detect illegal
>
> Now I would like to find a software or a perl scrip that would do the
work.
> (The budget that we have is 0$, so freeware is likely to be the solution)
>
> I have tried doing searches using google without any luck. If anyone uses
>
> Thanks,
> >
> Salutations,
>
> Johan Denoyer
> jdenoy@digital-connexion.info
> Digital Connexion
>
- application/octet-stream attachment: arp.pl
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