I'm pretty new to netfilter so bear with me. I have a server that has a quad card, currently the card is configured: eth0 -> internet eth1,eth2 -> not active (yet) eth3 -> internal lan 10.2.0.0/24 network I am running dhcpd on eth3 and everything works ok, except for the renewing of addresses. For example: 1. Connect a laptop to the network and power up, get an address ok. 2. Release the address and then renew the address, get an address ok. 3. Perform a renew on the laptop and it fails. My rules are setup as follows: iptables -A INPUT -i eth3 -p udp -s 0.0.0.0 --sport 68 -d 255.255.255.255 --dport 67 -j ACCEPT iptables -A INPUT -i eth3 -p udp -s 0.0.0.0 --sport 68 -d 10.2.0.1 --dport 67 -j ACCEPT iptables -A INPUT -i eth3 -p udp -s 10.2.0.0/24 --sport 68 -d 10.2.0.1 --dport 67 -j ACCEPT iptables -A OUTPUT -i eth3 -p udp -s 0.0.0.0 --sport 67 -d 255.255.255.255 --dport 68 -j ACCEPT iptables -A OUTPUT -i eth3 -p udp -s 10.2.0.1 --sport 67 -d 255.255.255.255 --dport 68 -j ACCEPT iptables -A OUTPUT -i eth3 -p udp -s 10.2.0.1 --sport 67 -d 10.2.0.0/24 --dport 68 -j ACCEPT Does this make sense? What am I missing? Thanks -- -Tim Miller "You are who you become" Email: tj.miller@xxxxxxxxxxxxxxx Registered Linux User #302727
