2 x 3c905b in a firewall, (eth0 in 10Mb, eth1 in 100Mb)

[Antti Boman]

Hi,

I have a problem (I suppose most of the ones who post do have a problem).

Here's the situation:

I have a firewall, which has two 3c905b's. The Linux distribution is RedHat
5.1. I've set up the firewall the way that I can ping both cards, both
networks, 'the Internet herself' etc. The computers behind the firewall can
ping both its cards, which means forwarding works ok, too. Still, those
comps just can't get through. I've tried everything I could, and no success.
Firewalling rules are wiped out (with default policy accept), still no luck.
No ICMP, TCP or UDP.

Ok, might the problem be that eth0 is in the 10Mb state and eth1 in the
100Mb one? I have another computer with a 3c905b and a 509 card, and there
seems to be the same problem. Also, I'd like to point out that I can't even
affect the ARP tables of eth1, arp shows that it affected eth0 instead.

If you have any ideas, I'd lose less sleep ;)

Thanks,
 Antti 'ask-if-you-didn't-get-it-or-need-more-info' Boman