On Tuesday, May 31, 2005, Christopher Fowler wrote: > > Is there a way I can plug a Linux box between E-Deltacomm and my Cisco > switch and have it do filtering but not have an IP address on either > eth0 or eth1. This could be an invisible inline firewall thingy :) What you describe is an ethernet bridging firewall. Take a look at http://ebtables.sourceforge.net/ --Joe