RE: Blocking Access to Non-domain computers

["Andrew Shore" <andrew.shore () holistecs com>]

DHCP/BOOTP are broadcast protocols and are designed to respond to any client.

With out a lot of manual intervention, one thing these protocols are designed to avoid, you will not be able to achieve 
your goal.

Perhaps an authenticating proxy could resolve your problem?

Andy. 

-----Original Message-----
From: Alexandre Verriere [mailto:maxwell () nskb net] 
Sent: 30 August 2004 11:32
To: Brian Gehrke
Cc: security-basics () securityfocus com
Subject: Re: Blocking Access to Non-domain computers

Brian Gehrke a écrit :

> I am running a W2K domain, using DHCP.  Is it possible to block 
> non-domain computers from getting an IP address from the DHCP server, 
> so they will not be able to access the Internet through the network.
>
> Brian
You can do static ip adressing via your dhcp but mac spoofing is not so 
hard, il you're in need to
restrict acces to your proxy you may might want to do some 
authentification at the proxy gate (ntlm for ex).

Hope this helps...

-- 

                                ''~``
                               ( o o )
+------------------------.oooO--(_)--Oooo.-----------------------+
  
        Alexandre Verriere (Maxwell) - Http://www.nskb.net 


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