Re: SBS 2003 - dual nics connectivity problem
- From: "Lanwench [MVP - Exchange]" <lanwench@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 9 Feb 2006 09:40:09 -0500
In news:50158C2A-BA7F-4B62-AAD8-72889E6D7DCC@xxxxxxxxxxxxx,
Paul Barker <PaulBarker@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
"Lanwench [MVP - Exchange]" wrote:
In news:89E347C0-7F1B-46A0-A4B6-D7033FFA1B47@xxxxxxxxxxxxx,
Paul Barker <Paul Barker@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
Hi, this problem has stumped me for a while. We are running two sbs
2003 servers, both with a nic for wan and a nic for lan. The wan ip
is a static public address and teh lan ips are 192.168.x.x The
problem is that after a day or so of running with both nics enabled,
all wan connectivity is lost, and it only returns when the lan card
is disabled. I've tried different nics, but since this problem is
happening on two machines, i think we must be missing something
somewhere, perhaps something we've overlooked along the way. Any
help with this matter woudl be great, can also provide more
infomation if needed.
regards
Paul
Maybe look for event log errors ....and post an ipconfig /all from
the box in question.
PS: If you aren't using ISA, you really need to get a decent hardware
firewall appliance to stick between WAN and LAN.
heres the output
Windows IP Configuration
Host Name . . . . . . . . . . . . : tweb
Primary Dns Suffix . . . . . . . : Totem.local
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes
DNS Suffix Search List. . . . . . : Totem.local
Ethernet adapter WAN:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network
Connection Physical Address. . . . . . . . . : 00-03-47-CE-F8-61
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 84.243.27.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 84.243.27.254
DNS Servers . . . . . . . . . . . : 84.243.27.253
84.243.0.210
Ethernet adapter LAN:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com 3C905TX-based Ethernet
Adapter (Generic)
Physical Address. . . . . . . . . : 02-60-8C-F1-82-F5
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.9.150
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.9.50
DNS Servers . . . . . . . . . . . : 84.243.27.253
84.243.0.210
First - you have DNS problems. You have to specify 192.168.9.150 (your SBS
LAN IP) for DNS on *both* NICs.....and *no* external DNS servers. Your
forwarders will take care of the external queries. Try re-running the
CEICW - it's supposed to do this for you by default.
AD relies heavily on DNS and if the latter isn't set up perfectly, expect
problems.
What's 192.168.9.50 / default gateway? I don't like dual NIC configurations
(esp. if you don't use ISA), so I'm not sure why your default gateway is set
the way it is.
I repeat my recommendation that you get a good firewall appliance.
.
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