Date: Sun, 1 Feb 2004 14:48:02 -0600 From: Luke Johannsen <luke@themango.org> To: "Edward Carmody" <ecarmody@shoregroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: FBSD router/firewall with dhclient & dhcpd Message-ID: <ED32131F-54F7-11D8-9D3E-000A95F07EF4@themango.org> In-Reply-To: <007a01c3e901$5a4ada80$3268a8c0@edsdell8200> References: <007a01c3e901$5a4ada80$3268a8c0@edsdell8200>
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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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