If you go the latter have a look at PFSense http://www.pfsense.org/index.php?option=com_content&task=view&id=40&Itemid=43

On Tue, Aug 4, 2009 at 6:07 PM, Glenn Sequeira <gsequeira@gmail.com> wrote:
On Tue, Aug 4, 2009 at 5:49 PM, Joe Murithi Njeru<joe.njeru@gmail.com> wrote:

> Which is a better solution.. purchase a CISCO router or implement a *NIX
> solution on an old server?

Others may provide you further info on which is better, but if you end
up choosing the second option, you may want to take a look at Vyatta
(http://www.vyatta.org). And the old server thing... well your
increasing the possibility of the system failing with old hardware.

gms