Re: Maximum number of subnets on a firewall

[Paul Robertson <proberts () patriot net>]

On Wed, 28 Jan 2004, Paolo Supino wrote:

> Hi
>
>   The following story and question aren't product specific so please don't
> try to attach it to any available product: I was asked to plan a network for
> a group of 3 companies (all located in the same building and want to use the
> same infrastracture). From gathering the requirements of each of the
> companies I've concluded that all of them together will need 10 subnets
> (including the subnet that is connected to the internet). Since the biggest
> number of subnets per firewall that I ever installed was 6. Setting up 10
> subnets on 1 firewall (to me) seems too much for me so I'm looking for a way
> to have the 10 networks on 2 (or 3) different firewalls. If you have any
> suggestions on a possible layout I'd be very happy to read it.

I used to put 3 Sun QFE cards into Ultra2 systems all the time to do proxy
firewalls.  These days though, I'd probably give each company its own
firewall, then put those behind something with a fairly generic common set
of rules.

Paul
-----------------------------------------------------------------------------
Paul D. Robertson      "My statements in this message are personal opinions
proberts () patriot net      which may have no basis whatsoever in fact."
probertson () trusecure com Director of Risk Assessment TruSecure Corporation
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