Thanks for the reply Ben. I haven't tried arp filter yet. But what I did was updated the arp table of the other host (himadri) with the spoofed MAC address of Linux machine. himadri :> arp -a | grep 210 7:qfe0 192.2.84.210 255.255.255.255 S 00:11:11:29:78:11 I pinged 192.2.84.210 (spoofy Linux machine) from himadri. The snoop at arabhi (192.2.84.210 ): 06:29:38.864074 00:03:ba:08:ac:eb > 00:11:11:29:78:11, ethertype IPv4 (0x0800), length 98: IP (tos 0x0, ttl 255, id 16047, offset 0, flags [DF], proto 1, length: 84) himadri > 192.2.84.210: icmp 64: echo request seq 119 06:29:39.864080 00:03:ba:08:ac:eb > 00:11:11:29:78:11, ethertype IPv4 (0x0800), length 98: IP (tos 0x0, ttl 255, id 16048, offset 0, flags [DF], proto 1, length: 84) himadri > 192.2.84.210: icmp 64: echo request seq 120 06:29:40.863960 00:03:ba:08:ac:eb > 00:11:11:29:78:11, ethertype IPv4 (0x0800), length 98: IP (tos 0x0, ttl 255, id 16049, offset 0, flags [DF], proto 1, length: 84) himadri > 192.2.84.210: icmp 64: echo request seq 121 There is no response from 'arabhi' (spoofy Linux machine) on this MAC address... the switch is forwarding the frames though. Do I need to change any configuration on the Linux host to associate itself with this spoofed MAC interface ?? Regards, Chaitra ________________________________ From: vlan-bounces@xxxxxxxxxxxxxxx on behalf of Ben Greear Sent: Wed 27-Sep-06 6:25 To: Linux 802.1Q VLAN Subject: Re: [VLAN] 802.1Q - MAC Spoofing P Chaitra-A15829 wrote: > Hi, > > I am posting my question again in this forum. > I sincerely appreciate if you could help on this regard. Currently I > am stuck here.. > > _*My Requirement :*_ > 1. On a single Linux RedHat machine with a single interface card, > spoof the multiple MAC addresses. > 2. This card will be connected to (2950 cisco ) L2 switch. > 3. On the switch tag the frames based on the Vlan tag id (802.1Q). Did you try the arp-filter trick I mentioned in the last email? Ben -- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com _______________________________________________ Vlan mailing list Vlan@xxxxxxxxxxxxxxx http://www.candelatech.com/mailman/listinfo/vlan -------------- next part -------------- An HTML attachment was scrubbed... URL: http://ns2.lanforge.com/pipermail/vlan/attachments/20060926/272380d7/attachment.html