[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference noted::seal

Title:SEAL
Moderator:GALVIA::SMITH
Created:Mon Mar 21 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1989
Total number of notes:8209

1774.0. "3 network cards or tri-homed/multi-homed configurations?" by TENNIS::KAM (AltaVista Software 714/261-4133 DTN 535.4133) Wed Feb 05 1997 03:54

    Anyone know if you can configure the AltaVista Firewall for Digital
    UNIX for a minimum of three network cards?
    
    I don't think it's possible at all with the NT version, but the Digital
    UNIX might have a chance.
    
    Checkpoint is selling the strategy of three network cards and the
    Education Community is sold on the idea.  One network interface, not so
    secure for the students and the othe network interface, secure for the
    administrative part.
    
    Any ideas would be appreciated and are you seeing this?
    
    	Regards,
    
T.RTitleUserPersonal
Name
DateLines
1774.1Some support, but not with the GUINETRIX::"[email protected]"Sebastian L�lsdorfWed Feb 05 1997 07:1925
Digital UNIX supports more than 2 network interfaces
(maximum depends on number of free slots in your Alpha).

Firewall software supports this by screend or gxd configuration.
It is called "green net support", shortly described in Appendix E of 
the "Internet Firewall Service Delivery Guide", QS-SEAA9-CP, Version 1.1,
May 1996 by Ken Linell.

The Application Gateways don't support it in their policies, not even
with the custom policies. But it might be possible to edit the acl-files
manually. See the man pages (man 4 access_control_file).

However NOTE: Green net support canNOT be configured with the GUI at all!

Once you have done it under the covers, the GUI will mislead you: You don't
see any longer what's really allowed to go through the firewall, but you
see something different, just what the GUI is showing to you. Using the GUI
later on will destroy the changes you've made. And the customer feels anxious
about the future firewall administration.

(I have asked Sarah Keating recently whether this will change with V3.0:
her answer was no.)

Sebastian 
[Posted by WWW Notes gateway]
1774.2QUICHE::PITTAlph a ha is better than no VAX!Wed Feb 05 1997 09:018
    There are several possible configurations here - green net is one of
    them.  
    
    I have also got a customer who has two red interfaces - he has a
    connection to a University and another to an ISP.  I had to build one
    of them normally, and then handcraft the other.  It was "fun".
    
    T
1774.3TENNIS::KAMAltaVista Software 714/261-4133 DTN 535.4133Wed Feb 05 1997 11:3326
    I assume Green Net can either be the Perimeter Network where all the
    Proxy Servers and other Bastion Host(s) are located or actually a second
    network within your Corporation.
    
    Anyone know how to order the documen described in .1?  The part #
    provided is for a Service:
    
      
                             QS-SEAA9-CP  FIREWALL SERVICE
    
             - Detailed Description -             - Not Available -
    
              USCLP     25,000.00  List Price
              SLP1S           N/A  Standard Price
              BSMC            N/A  Basic Service Monthly Charge
              SMS             N/A  System Management Service Monthly Charge 
              SSS             N/A  Software Support Service Monthly Charge
              MDDS            N/A  Media/Doc Distribution Service Monthly Chrg
              SWLC              A  License Code
              EU                N  End User Discount
              BU                P  Business Partner Discount
              SPD        XX.XX.XX  Software Product Description
    
    
    	Regards,
    
1774.4Location of service delivery guideDELNI::KEVINWed Feb 05 1997 11:4310
    re .3
    
    The firewall service delivery guide is located on my anonymous ftp
    server (beech.crl.dec.com) in the /pub directory as fwsdg.ps.  
    
    re .1 
    
    As a minor correction, I wrote the service delivery guide.
    
    Kevin Carey