On Feb 1, 2004, at 2:24 PM, Edward Carmody wrote:
Hi, I'm trying to replace my Linksys router/firewall/nat box with a FreeBSD box...I'm in the configuring/testing phase before I put it into production...
My *potential* problem is that my ISP (Cablevision) re-addresses their DNS servers often. My question is: is there a way to dynamically update the "option domain-name-servers" values in dhcpd.conf from the "nameserver" values my ISP-facing, dhclient-using interface is writing into "resolv.conf"?
Or, more simply, how can my DHCP server hand out *known-fresh-and-good* ISP dns server addresses gathered from the wan-facing dhcp client?? The linksys box I have now does this auto-magically... ;-)
I don't know if this is a solution that you want but it works for me. Setup DNSMasq on your firewall machine. http://www.thekelleys.org.uk/dnsmasq/doc.html or from the ports /usr/ports/dns/dnsmasq. Then just point to your internal IP on your firewall as your nameserver. It's quick and painless to setup and get running and seems to work well for small networks.
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