iptables performance good enough for 10 GBit link?

[Carsten Aulbert <carsten@welcomes-you.com>]

Hi,

sorry that my first posting here will be a vague one. We are currently
estimating the possibility for a computer to act as a packet filter
between 2 10Gbit links. Since we have no experience beyond 1 Gbit I
would like to ask a few questions:

(1) Has anyone tried how much data can be pumped through available 10
Gbit cards on a recent Linux kernel?

(2) How much CPU power/memory is needed by netfilter for a simple set-up
where packages on the incoming port need to be evaluated based on their
IP-range. Imaging simply allowing only ssh and NFS connections (TCP,
limited port range) from a certain /24 network and reject/drop all other
incoming packages on the external interface. So far no NAT is planned.

(3) Is this the right place to ask these questions ;)

Thanks a lot for a few hints, if this is possible or needs testing or ...

Cheers

Carsten