RE: Blocking Access to Non-domain computers

From: DeGennaro, Gregory (Gregory_DeGennaro_at_csaa.com)
Date: 08/25/04

  • Next message: Don Parker: "RE: User Activity Monitoring" 
    Date: Wed, 25 Aug 2004 07:14:18 -0700
To: "Andreas" <andreas@inferno.nadir.org>, <security-basics@securityfocus.com>

    You can use MAC filtering, however if you are really paranoid, you
    should use a CA server which can be extended to the network level using
    802.1x. If you are not using Active Directory, you may want to migrate
    to AD and if you are paranoid, upgrade to Windows 2003 server and XP
    professional and take advantage of Ipsec Policy.

    http://www.microsoft.com/resources/documentation/WindowsServ/2003/all/de
    ployguide/en-us/Default.asp?url=/resources/documentation/WindowsServ/200
    3/all/deployguide/en-us/dnsbj_ips_overview.asp

    It seems to work really nice and have heard many good things about ipsec
    policy. Of course, if you encrypt traffic and you use a NIDS, you will
    need to have man-in-middle devices to unencrypt and sniff the packets
    and re-encrypt or you will need a HIDS on all devices.

    Regards,
     
    Greg DeGennaro Jr., CISSP, CCNP
    Systems Engineer

    -----Original Message-----
    From: Andreas [mailto:andreas@inferno.nadir.org]
    Sent: Monday, August 23, 2004 12:16 PM
    To: security-basics@securityfocus.com
    Subject: Re: Blocking Access to Non-domain computers

    Hello,

    On Thursday 19 August 2004 16:58, Brian Gehrke wrote:
    > 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.

    is dhcp by mac address (which of course can easily be spoofed)
    an option?

    regards,
    andreas

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  • Next message: Don Parker: "RE: User Activity Monitoring"

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