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Re: [Openvpn-users] Blocking DHCP


  • Subject: Re: [Openvpn-users] Blocking DHCP
  • From: AthlonRob <AthlonRob@xxxxxxxx>
  • Date: 10 Sep 2003 09:39:03 -0700

On Wed, 2003-09-10 at 01:15, Dave B wrote:
> Now that i have my vpn up and working with broadcast support i want to block 
> DHCP from crossing the network as i have two DHCP servers setup for 
> different scopes and don't want the clients to get mixed up.  I tried all 
> sorts of things with shorewall's rules trying to block ports 67 & 68 but 
> just can't get it to go with the bridge.  Is there anyway that i can block 
> this within openvpn?

I don't think you can have your cake and eat it too.... here's a post
from a Debian list about it...

http://lists.debian.org/debian-security/2001/debian-security-200111/msg00426.html

Then again, it seems it might be possible.

A quick look at the Linux Bridging page turned this up: 
http://bridge.sourceforge.net/docs.html

Rob


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