Recent slow down in internet connection in SBS 2003

I am running SBS 2003 and I have a few XP clients. I try to keep things simple as I am not all that knowledgeable. My problem is that the internet access has become erratic meaning that you need to click on the website you want to go to a number of times before it actually loads the page. My setup is a two NIC setup and if I plug the cable modem directly into one of the clients the internet service is fine. I have checked cables and they are fine. What could be causing this problem? Do I need to replace the network card or can I test the network cards some how to see if the problem is occuring from there. I have run antivirus and spyware and all was clean. I would appreciate any assistance.
MatthewGreekAsked:
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NMirCommented:
Is the Internet access from the server normal?
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suppsawsCommented:
Hello MatthewGreek,

Do you have isa on the server?
could you please give us an ipconfig /all of the server and one of the client stations please.

Regards,

suppsaws
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FehzCommented:
Are you running exchange?  I've seen where a connector was set up to catch all email (for legal purposes) on a seperate server and it would constantly cause things to come to a crawl at random times.  You can change that connector to only run during non-business hours.  I would also suggest downloading wireshark and see if there are any specific external IP's with a lot of traffic going to them.
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MatthewGreekAuthor Commented:
Internet access from the server is not normal. It has the same symptoms as the rest of the clients. Erractic internet connection and slow. Emails are OK I think but hard to tell. They certainly come through without any problem
Guys, I really appreciate the prompt help. I will get the other info as requested but it is a little tricky for me.
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MatthewGreekAuthor Commented:
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : server
   Primary Dns Suffix  . . . . . . . : AUSTDENT.local
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : Yes
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : AUSTDENT.local

Ethernet adapter Server Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
   Physical Address. . . . . . . . . : 00-16-E6-85-39-91
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.16.2
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DNS Servers . . . . . . . . . . . : 192.168.16.2
   Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter Network Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : D-Link DFE-528TX PCI Adapter
   Physical Address. . . . . . . . . : 00-15-E9-F2-27-0E
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.0.66
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1
   DNS Servers . . . . . . . . . . . : 192.168.16.2
   Primary WINS Server . . . . . . . : 192.168.0.66
   NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>
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suppsawsCommented:
Wins should be blank on the second NIC.
Please have a look at this doc for the correct settings of your nics:
http://www.smallbizserver.net/Articles/tabid/266/articleType/ArticleView/articleId/76/Two-Nics-a-static-IP-address-ISA-router.aspx
it would be interesting to know if you have ISA though.
You could do a speedtest on the net to see what your actual speeds are.
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MatthewGreekAuthor Commented:
what is ISA
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suppsawsCommented:
isa is a firewall application that is used on SBS 2003 premium edition.
Do you have sbs standard or premium edition?
A rerun of the CEICW (connect to the internet wizard) might be interested.
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MatthewGreekAuthor Commented:
I have standard SBS 2003
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MatthewGreekAuthor Commented:
I fixed the wins setting on the 2nd NIC and no diff really to what is happening overall.
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suppsawsCommented:
Is the internet slow all the time, or is it from time to time?
You should test with a laptop directly to the modem together with a test on the server to see if it's really the server which is causing the trouble.
If it's the server an update of the NIC drivers could be intersting, after that a rerun of the CEICW.
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MatthewGreekAuthor Commented:
Yes I connected the laptop to the modem directly and the internet connection is almost instantaneous. I will test the server  - which NIC do I connect to? I am assuming the one pointing out.
By the way what is CEICW and which speed test can I use to diagnose the problem.
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MatthewGreekAuthor Commented:
Guys I worked it out. We had just moved interstate and eventhough I use a national internet service provider the DNS settings were slightly different. Running FULL BORE NOW.

Many thanks for all your genuine help.
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MatthewGreekAuthor Commented:
Many thanks again
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Vee_ModCommented:
Closed, 500 points refunded.
Vee_Mod
Community Support Moderator
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