Re: Linux Gateway with QoS without NAT possible?

[RonSenykoff@xxxxxxxx]

<snip>I have one rack with a connection
provider and several servers in it. 
All these servers have public IP adresses, and I would want to place a
gateway so I can control traffic on all of them.

So it seems that I sould place a linux machine in the rack, connect all
the servers with a switch and configure the default gateway on the 
machines to the new one.

This new one will be in the same network as the others (public IP) and
I'd like this machine to act as a router/firewall/QoS but without doing
NAT.

What about incoming traffic? Would I have to ask the connection provider
to reroute the incoming traffic to the gateway machine?</snip>

It sounds like you may be interested in
a bridge. A bridge is more like a switch in that it has no IP address.
This way, you can drop it in place between your rack machines and the ISP.
Because it has no IP it will not impact your network topology as far as
gateways etc. But since all the traffic is passing through it, you can
filter some out (1st link) and apply QoS (3rd link).

<snip>Could you direct me to documents,
tutorials, examples, 
howtos or whatever that could help me with this setup?</snip>

http://tldp.org/HOWTO/Ethernet-Bridge-netfilter-HOWTO.html
http://bridge.sourceforge.net/index.html
http://www.compsci.lyon.edu/mcritch/dante/
http://www.tldp.org/HOWTO/BRIDGE-STP-HOWTO/index.html

HTH,
-Ron