``Design a Safe Network Using Firewalls'', Paul Wouters, Linux Journal, August 1997.
NET-3 HOW-TO, Terry Dawson: http://sunsite.unc.edu/LDP/HOWTO/NET-3-HOWTO.html
Proxy ARP Subnet mini-HOW-TO, Bob Edwards: http://sunsite.unc.edu/LDP/HOWTO/mini/Proxy-ARP-Subnet.html.