At 05:38 PM 3/7/00 +0530, Sajith Menon wrote:

>I have a P II system with Red Hat Ver 6.1 loaded. This system acts as a
>gateway for two subnets. Is it possible to add two more ethernet cards and
>make the  machine as gateway for 4 subnets. 

Yes. 

>Will there be any problems
>faced in doing so.

1. Each NIC needs an IRQ, and it's conceivable that your system is so loaded
that you won't be able to find two more IRQs to use. In typical systems, IRQ
5, 9, 10, and 11 are available.

2. You need to set up routes to the various networks. This is easily done by
adding lines to /wherever_Red_Hat_puts_it/init.d/network, similar to the
ones there for the two existing networks.

3. You need to do whatever is appropriate with Masquerading and firewalling.
You don't say what you do for the two existing networks, but more LANs can
complicate the ipchains ruleset.

4. Look at your existing system load. A P-II is overkill for a simple
router, but if the host is doing other things, you need to consider system load.

Whether these are "problems" or just "details" is in the eye of the
beholder, I suppose.

------------------------------------"Never tell me the odds!"---
Ray Olszewski                                        -- Han Solo
Palo Alto, CA                                    [EMAIL PROTECTED]        
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