--- Reply created Sunday, 30 September 2001, 06:56:46 ---

James,

Thanks for the info...

1. This is the epiphany I recently had on the subject; works much
better this way.

2. That is likely the cause of behavior I am noticing; if I'm lucky, I
will be able to try a separate hub before I cable the T1 router
directly to the NIC in the linux box.

3. This is good news; hopefully, I will be that "lucky".

Thanks again,

Clinton E. Troutman
Sr. Support Technician
AutoRealty Products, Inc.
[EMAIL PROTECTED]
http://www.autorealty.com/


------- Begin Original Message --------
On Friday, 28 September 2001, 06:59, you wrote:

JS> I've noticed simular problems when building a firewall and testing it
JS> before going live.  What I've noticed is that.

JS> 1.  I need to create 2 different subnets.  Since my in house net is
JS> 192.168.187.x I've use 10.0.1.x for the second.

JS> 2.  When both nics are connected to the same hub eth0 answers for both
JS> nics no matter what I do.  So I have to use a before and after hub. (one
JS> hub for the 192 network and a second up for the 10 network.)

JS> 3.  Most of the time these problems disapear when it goes live without any
JS> major changes other that using real IP's

JS> James



JS> On Tue, 25 Sep 2001 16:36:17 -0400 (EDT)
JS> Jason Van Patten <[EMAIL PROTECTED]> wrote:

>> At Tue Sep 25 16:06:38 2001, AutoRealty Technical Support wrote:
>> > Currently, the mask for both is 255.255.255.254
>> > I have attempted 255.255.255.0  255.255.255.255  255.255.255.254
>> > without differing results. Always using the same subnet on both NIC's.
>> 
>> My bet is, given your arp table, that you want a /24 subnet mask, ie,
>> 255.255.255.0.  So try this and tell me what happens:
>> 
>> # ifconfig eth0 90.0.0.89 netmask 255.255.255.0 broadcast 90.0.0.255
>> # ifconfig eth1 90.0.0.88 netmask 255.255.255.0 broadcast 90.0.0.255
>> 
>> > At this time, the machine simply serves HTTP and FTP. The ultimate
>> > goal is for this machine to serve as a firewall; receiving packets
>> > from the router through eth0 and passing (some) packets to the LAN
>> > through eth1. I have made no progress on the firewall setup as I can
>> > not solve this problem (separate IP's on each NIC).
>> 
>> Well, having both interfaces on the same /24 isn't going to get you what
>> you're after.  The idea of a firewall/router is to have one interface on
>> a
>> private subnet (say, 10.0.0.0/24) and another on a public subnet
>> (your 90.0.0.0/24 for instance.)  Then you "route" between them.
>> 
>> jas
>> -- 
>> Jason Van Patten
>> AOL IM: Jason VP 
>> 
>> 
>> 



------- End Original Message --------
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