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Re: A gateway solution ?



	  Internal Network Computers (192.168.1.10 to 192.168.1.254)
			             |
                                     |
	           Default Gateway Computer (192.168.1.1)
                                     |
		  ---------------Internet-----------------
                  |                  |                   |
	      DNS Server         Web Server          Mail Server

That is what the diagram looks like. :)

> So:  a client wants to access mail.alfa.org to read mail.  It performs a
> DNS lookup on the name and gets the address.  It determines from
> its routing table that it must go through your gateway to get to that
> address.  The gateway reads the source address in the packets it
> receives and, according to rules you specify with ipmasqadm, re-
> places the address with it's own.  The mail server (mail.alfa.org)
> sends all responses to the gateway, who forwards those responses
> to the client.  The mail server never realizes that it's really talking
> to a machine behind the gateway-- and it really doesn't care.
> 
> For more information, read the Networking HOWTO at
> http://www.linux.doc.org/.  The Kernel HOWTO at that site
> might also help.
> 
> Marc
> 
> ----------
> Marc Mongeon <mongeon@bankoe.com>
> Unix Specialist
> Ban-Koe Systems
> 9100 W Bloomington Fwy
> Bloomington, MN 55431-2200
> (612)888-0123, x417 | FAX: (612)888-3344
> ----------
> "It's such a fine line between clever and stupid."
>    -- David St. Hubbins and Nigel Tufnel of "Spinal Tap"
> 
> >>> "Neil D. Roberts" <koala@lander.es> 11/30 9:52 AM >>>
> Thanks for the info, ok, to cut things short, they can all install on
> "ne" (Compatible NE2000 Ethernet Card). I think that is what you meant
> by modules.
> 
> Russell Coker wrote:
> 
> > Why have 500M of swap?  As your machine only has 32M of RAM it will be almost
> > unusable if it ever uses more than 64M of swap.
> 
> Ok, I have re-partitioned the hard drive to the following :
> hda1 is "/"    (400Mb)
> hda2 is /var   (150Mb)
> hda3 is swap   (100Mb)
> >
> > Why have 500M of swap?  As your machine only has 32M of RAM it will be almost
> > unusable if it ever uses more than 64M of swap.
> 
> > Firstly you need the modules loaded.  As you didn't bother telling us the
> > type of network card that can't be answered.
> > The generic answer is to put something in /etc/modules, then add appropriate
> > "ifconfig" lines to /etc/init.d/network .
> > Then add "echo 1 > /proc/sys/net/ipv4/ip_forward" to /etc/init.d/network .
> 
> Thanks for the info, ok, to cut things short, they can all install on
> "ne" (Compatible NE2000 Ethernet Card). I think that is what you meant
> by modules.
> 
> Right now in /etc/modules I have "ne".
> 
> And the network file in /etc/init.d is configured for the first
> installed ethernet card. What I was trying to ask was how to install the
> other two ethernet cards. Here is the table:
> eth   io     irq  module  ip             subnet           gateway
> ----------------------------------------------------------------------
> eth0  0x320  09   ne      192.168.1.1    255.255.255.0    None
> eth1  0x200  03   ne      195.76.46.62   255.255.255.224  195.76.46.33
> eth2  0x280  15   ne      192.168.1.253  255.255.255.0    None
> 
> Right now, eth0 is installed, so I have the first network card working
> with the configuration shown above. I installed it when installing
> debian, on the hardware selection part, but it only lets you install one
> card per module.
> 
> Thanks
> 
> Neil.
> 
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