Re: DNS configuration
- From: "Lanwench [MVP - Exchange]" <lanwench@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 20 Jul 2007 09:51:25 -0400
SuperGumby [SBS MVP] <not@xxxxxxxxxxx> wrote:
just a note:
Most routers act as a forwarder/proxy for the DNS they pick up on the
WAN, some even cache the queries so asking the router is faster than
going out to the ISP. I commonly use the router address as the only
forwarder.
I've tried that & didn't find it reliable, honestly.
NOTE: in beta testing of an upcoming and oft looked forward to
product I had it connected to a router that DOES NOT act as DNS
forwarder, it expected LAN clients to be DHCP clients and therefore
get the ISP DNS servers from it's DHCP service. The router not acting
as a DNS forwarder _partially_ broke the product under test. The
development team of the product have been advised of this.
Ah, the mysterious and anticipated Product X!
"Lanwench [MVP - Exchange]"
<lanwench@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:uju91jjyHHA.3564@xxxxxxxxxxxxxxxxxxxxxxx
orsobubu <postxng@xxxxxxxxxxx> wrote:
My network includes a server with SBS 2003 r2 sp1, a pc as a router/
firewall with Ipcop installed, and 8 xp clients. In SBS-related
groups and forums, I found different proposed solutions to
configure DNS, so I would like someone could answer these questions:
1 - Inside my LAN I don't use DHCP, so I disabled DHCP service;
somewhere I read that is better to enable DHCP and configure dns
dynamic updates in any case, even if I have only static IPs. Is this
correct, also considering that my ISP network is natted? If it is
correct, which is the best configuration of the three tabs inside
DHCP properties window, in conjunction with static IPs?
Well, I can't understand why you'd want to use statics, but if you
are, and plan to continue doing so, don't enable DHCP. There's no
need.
2 - DNS are configured as follows:
Router: DNS are automatically obtained by the ISP
XP clients: default gateway pointing to the router IP; primary dns
are pointing to the server IP; secondary dns left
blank (is it correct?)
Correct.
SBS server: default gateway pointing to the router IP; primary dns
pointing to the router IP (or must pointing to itself?)
It must point only to itself for DNS - its own IP, same as your
workstations use.
; secondary dns
left blank;
Correct
forwarders: pointing only to the router IP (or must add
other ISP dns?)
Don't use the router's IP as forwarder - use your ISP's DNS servers
as forwarders. The only place your router's IP should show up is as
the default gateway for your server/clients.
3 - Aside from forwarders configuration, I left unchanged all the
tabs in Properties window of my SBS dns console: is this correct in
my case?
Probably, yes.
4 - what is a root-hints-based configuration?
You might checkout http://en.wikipedia.org/wiki/Domain_name_system
Root hints will be used in conjunction with forwarders....or will be
used alone if you don't have any. Forwarders are more efficient, in
my opinion.
Thank you!
.
- References:
- DNS configuration
- From: orsobubu
- Re: DNS configuration
- From: Lanwench [MVP - Exchange]
- Re: DNS configuration
- From: SuperGumby [SBS MVP]
- DNS configuration
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