Resnding again..
Also, one more information is :
The ARP Response from the host for the spoofed IP address (on spoofed
MAC address) is going with the main or primary MAC address.
On "himadri" host :
20:38:38.767042 arp who-has 192.2.84.201 (Broadcast) tell himadri ======
These are the snoop on the "himadri" host from which ping was done to IP
"192.2.84.201 ".
20:38:38.767048 arp reply 192.2.84.201 is-at 00:11:11:29:78:26
=========
On arabhi host (VLANs are created here) :
[root@arabhi aspect1]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:11:11:29:78:26
inet addr:192.2.84.91 Bcast:192.2.84.255 Mask:255.255.255.0
eth0.201 Link encap:Ethernet HWaddr 00:11:11:29:78:21 ============>
this is spoofed MAC interface on "arabhi" host.
inet addr:192.2.84.201 Bcast:192.2.84.255 Mask:255.255.255.0
inet6 addr: fe80::211:11ff:fe29:7821/64 Scope:Link
To add to this the eth0 on the "arabhi" was set in promiscuous mode.
Kindly let me know if I am missing here something.
Thanks,
Chaitra
________________________________
From: P Chaitra-A15829
Sent: Thursday, September 21, 2006 2:22 PM
To: 'vlan@xxxxxxxxxxxxxxx'
Subject: RE: MAC Spoofing
Hi,
I am also getting this warning when I create vlan id for the first time
on this machine :
vconfig add eth0 200
WARNING: Could not open /proc/net/vlan/config. Maybe you need to load
the 8021q module, or maybe you are not using PROCFS??
Added VLAN with VID == 200 to IF -:eth0:-
But when I cat this file it shows this :
cat /proc/net/vlan/config
VLAN Dev name | VLAN ID
Name-Type: VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
eth0.200 | 200 | eth0
Kindly let me know if I need any patch here !..
Thanks,
Chaitra
-----Original Message-----
From: Ben Greear [mailto:greearb@xxxxxxxxxxxxxxx]
Sent: Thursday, September 21, 2006 11:17 AM
To: P Chaitra-A15829
Subject: Re: MAC Spoofing
P Chaitra-A15829 wrote:
>
> Hi Ben,
>
> I have read through your pages (http://www.candelatech.com/~greear/)
> to understand how to configure VLAN.
>
> Below is my need :
>
> 1. I have one network interface card with a primary (or default)
> MAC address.
> 2. I want to create multiple VLAN IDs on the same interface card
> with different MAC and IP addresses.
> 3. I would like to perform DHCP for individual MAC addresses.
>
> I understand that this is possible.
>
> To test this I just started by configuring the VLAN on the following
> linux machine :
>
> Red Hat Enterprise Linux WS release 4 (Nahant Update 2) Kernel
> 2.6.9-22.ELsmp on an i686
>
> I have used the following command to configure the VLAN :
>
> vconfig add eth0 5
>
> ifconfig eth0.5 hw ether 00:11:11:29:78:30
>
> ifconfig eth0.5 inet 192.2.84.203
>
> After this I am trying to ping from other host to this "192.2.84.203"
> IP address but I don't see the corresponding MAC address being used in
> the ethernet frame.
>
> Even the arp table on the host shows the default MAC address of this
> machine rather than this MAC "00:11:11:29:78:30" address.
>
> Looks like I am missing something here?? DO I need to configure the
> switch for the vlan trunk??
>
Probably so. You certainly need to be using tagged vlan traffic in order
to talk to the
eth0.5 VLAN that you created.
Please send future email to the VLAN mailing list. If you can also
include the output of:
route -n
ifconfig -a
it will help us understand what you are trying to do.
Thanks,
Ben
> Thanks and Regards,
>
> Chaitra
>
> +91 80 2601 2087
>
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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