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<TITLE>RE: [rbak-nsp] dhcp only on interface</TITLE>
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<P><FONT SIZE=2>Do you mean like, redback "secured arp" ?<BR>
<BR>
"When secured ARP is enabled, ARP requests received on an interface are not answered unless the request<BR>
comes from the circuit known to contain the requesting host. ARP requests are sent by the interface only<BR>
on the circuit known to contain the target host, and are not flooded to all circuits bound to an interface<BR>
"<BR>
<BR>
I believe with this configured on an interface , no ARP requests are answered unless the requesting host has made themselves known to the redback (in your case , via DHCP)<BR>
<BR>
<BR>
<BR>
------------------------------------------------<BR>
David Freedman<BR>
Group Network Engineering<BR>
Claranet Limited<BR>
<A HREF="http://www.clara.net">http://www.clara.net</A><BR>
<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: redback-nsp-bounces@puck.nether.net on behalf of Marcin Kuczera<BR>
Sent: Sat 8/2/2008 21:33<BR>
To: redback-nsp@puck.nether.net<BR>
Subject: [rbak-nsp] dhcp only on interface<BR>
<BR>
hello,<BR>
maybe some of you know the function of "replay only" on MikroTik.<BR>
This is something that allows for the communication only hosts who confirmed<BR>
their lease of address to DHCP server.<BR>
Others with the static IP configuration will not work.<BR>
<BR>
Now, the question - is it possible to do it on RedBack ? (not CLIPS) ?<BR>
As far now I saw, that if I enable DHCP on interface and computers<BR>
fetch addresses from DHCP, the ARP entry looks like static.<BR>
However, dynamic ARP (static IP without DHCP) is still possible.<BR>
<BR>
Is there any method to disable dynamic ARP on particular interface to<BR>
make it running what I mentioned about ?<BR>
<BR>
If yes, any method to allow particular MAC/IP (static) to be mixed<BR>
with dynamic assignment ?<BR>
<BR>
Regards,<BR>
Marcin<BR>
<BR>
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