Steve,
I'm NOT using a separate firewall, but it sounds like you have a bad DHCP configuration, and you could run into this problem whether you have a firewall or just a single machine. 1. Make sure that /etc/resolv.conf contains the IP addresses of the Comcast DNS servers in your area AND make sure that the search domain correctly reflects the new network information if you know it because you have either gotten it from a machine that works or from someone in your area who knows what it is. Mine looks like: nameserver 68.46.144.5 nameserver 68.46.144.6 search brlngt01.nj.comcast.net 2. Your /etc/sysconfig/network-scripts/net_resolv.default should contain the same information that the resolv.conf file does. 3. Your initial /etc/sysconfig/network-scripts/ifcfg-eth0 should look like the following: DEVICE="eth0" DHCP_HOSTNAME="whatever your's is" BOOTPROTO="dhcp" IPADDR="" NETMASK="" NETWORK="" BROADCAST="" ONBOOT="yes" After DHCP passes the parameters, the "blanks" should be filled in with the correct information. 4. If you haven't turned your cable modem off since the conversion, you should do so, so that will clear any cached information out of its memory. Hope this helps. George
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