eth0, eth1, eth2 ??

[Tim]

Hi everyone,   I have been reading questions, concerns and several of the discussions from the list for some time now and I though it was time for me to get into the mix. I have downloaded several documents (Rustys' HOW TO included) to start learning about security, Netfilters' iptables and set up a firewall with my up and coming DSL line to my LAN. I have 4 years of experience in networking and know TCP/IP pretty well.   This is my present setup: Cisco 806 DSL router to my firewall box with three NICs, one incoming from the router (ISP), one to the LAN through my first switch and one to my DMZ, [webserver, mail], via second switch. At present I have several boxes in order to test for different vurnerabilities through different applications, i.,e., SQL, Citrix MetaFrame, M$ logon servers, Novell, M$ Exchange, etc., etc.,  I belive this will enable me to be a more proficient network administrator in the future.   This question is a confirmation of what I believe I already know but not totally sure about. On my firewall box, as mentioned previously, I have three NICs. On PCI slot 1: video card; PCI slot 2: 1st NIC; PCI slot 3: 2nd NIC; PCI slot 4: 3rd NIC. Now, eth0 would be the 1st NIC  on slot 2 ? Is this correct ? I need to confirm this in order to know which NIC Iam going to plug into on the firewall box from the router [location of eth0, eth1, eth2], the LAN, and the DMZ and also write rules for the different chains.   NOTE: If this question sounds simplistic, it is and I know it, please be kind. Remember, Iam but a fledgling grasshopper in comparison to the level of mastery the majority of you have in networking and security. If there are any really good documents you can point out to advance my knowledge it will be gratefully appreciated.   Tim Rodriguez-- Mia/Fla. Network Security Student -- 90% of networking problems are routing problems. 9 of the remaining 10% are routing problems, but in the other direction. The final 1% might not be routing, but check it anyway. --