Hi All,

I am a newbie to Linux. I am running a 2 NIC system with the routing table for eth0 allows user access to the internet, etc. and eth1 routes to another private network (192.168.x.x). eth1 is configured to handle DHCP requests. When a device connected via eth1 boots, it requests an IP from the DHCP server. Using tcpdump, eth1 is receiving the request but is not offering a lease. dhcp.conf seems to be configuring the DHCP service correctly ... and dhcpd is running. The host is running Red Hat Enterprise Linux (Server Edition) 5.1. Perhaps I need to modify fire-wall rules (or disable them on eth1 altogether)? How would I do this, and are there any other suggestions?

Thanks ...

you can check iptables -L to see whether firewall has configured DROP action for incoming DHCP packets.

I found the problem. It turned out that the ethernet address of the client was not as advertised. In the DHCP request, I noticed the ethernet address was NOT what was configured in the DHCP.conf file. Making the change in the .conf file resolved the issue.
Thanks!!