FW: FBSD router/firewall with dhclient & dhcpd
ecarmody at shoregroup.com
Sun Feb 1 12:24:44 PST 2004
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
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...
Info the FreeBSD box:
-FreeBSD Oberon 5.1-RELEASE FreeBSD 5.1-RELEASE
#0: Thu Jun 5 02:55:42 GMT 2003
root at wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GEN
-I have dhclient running correctly on my
to-be-ISP-facing interface (tested using a Cisco
2620 as dhcp server);
-I have dhcpd running correctly on my LAN-facing
interface (currently serving all home LAN
-I have verified that routed is exchanging RIP
updates with an internal Cisco 2620 (I run
multiple VLANs internally); will have to get VLANs
running on FreeBSD later...
-I think natd is set up correctly, haven't tested
-I have ipfw running full-open for internal
testing on home LAN.
All help is appreciated...thanks!
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