Filtering Broadcast by iptables it's possible?

Dear People:

We have a linux server with two network interface, eth0
toward our LAN and eth1 toward internet.

In eth0 we have several IP Alias, for to see other
networks in our campus, if I want to see by ethereal the trafic by
this interface I can see several broadcast that slow down the
performance in our network.

We want to filter the broadcasts, I know it's possible by
using a switch, but our organization don't have money for this, so I
think that only is possible by iptables...

My question is, it's possible to filter broadcast by
iptables only?, if it's true, please any hint is welcome...

Thanks in advance,
Pablo

Pablo Silva O <(E-Mail Removed)> wrote:

> We want to filter the broadcasts, I know it's possible by using a
> switch, but our organization don't have money for this, so I think
> that only is possible by iptables...

You _could_ filter it using iptables (just specify the destination
address as being the broadcast address). _However_, this won't increase
the performance of your network, as the broadcast traffic has already
made its way to the box, and up to the firewall layer.

Better to see _why_ there so much broadcast traffic, and do something
about it closer to the source.

--
Cameron Kerr
(E-Mail Removed) : http://nzgeeks.org/cameron/
Empowered by Perl!