On Monday, June 14, 2010, Robert Arkiletian <robark at gmail.com> wrote: > I have 3 nics in a NATed gateway file server. Two nics (eth1, eth2) > Is it possible to disable the NATing, nfs, dhcp and just somehow > bridge the external WAN nic to the internal ones such that it's just a > pass through? Basically having the server behave like a switch? > Allowing the internal systems to join the network on the WAN. I know > how to disable NAT, nfs and dhcp but not how to configure the nics. > You do this by creating a bridge. The Red Hat/CentOS way is to create emptyish interface files like: # cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=none BRIDGE=br0 ONBOOT=YES # cat /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 BOOTPROTO=none BRIDGE=br0 ONBOOT=YES And then a bridge interface file: # cat /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 TYPE=Bridge ONBOOT=yes STP=on IPADDR=system.ip.address.here NETMASK=your.dotted.quad.mask Obviously, adjust as needed to match your actual hardware, etc. This can of course also be scripted using the actual networking commands, that I don't recall offhand. -- "No animals were harmed in the recording of this episode. We tried but that damn monkey was just too fast."