ICS not working properly on Win2000 server. Please help!

[Jim]

Hi,

I have a Windows 2000 Server box and about 4 other computers on a local
private network. The server box is dual homed and uses ICS to allow the
other computers internet access. Recently, the other computers are not
able to access the internet like they have in the past. Sometimes they do
not receive responses from websites, or many of the items (images, etc) do
not download from websites. Now, when I try going to the same website from
the Windows 2000 Server box, everything shows up fine. I haven't installed
any software to affect the networking on the Win2000 box, other than recent
hotfixes. As a side note, the server box also has some shares on it, and
each client is able to access those just fine. So, it seems as though this
problem is mainly internet related.

Can someone please help me with determining why this would be.

Thanks

Jim

 

[Marina Roos]

You shouldn't need to use ICS on a server. If you have 2 nics, make sure the
internal nic has a blank gateway. External nic should be on a different
IP-range. DNS on both internal and external nic should point to your
server-IP. ISP-DNS-numbers should be set in tab Forwarders of DNS-server.
In DHCP make sure you have options 003, 006 and 015 set (and if you have
W9x, ME or NT4-clients, also 044 and 046 (0x8)) in Scope options.
The external nic should connect to your router.
Check bindingorder and make sure internal nic is on top.
Ipconfig/all from the clients should show that everything is pointing to the
server-IP.

Marina

 

[Guest]

hi, it sound to me that all your clients dont have the full access of the sever.if you have done any updates lately for instants IE ,updates can change your setting

 

[Jim]

Hi Marina,

Thanks for the reply! I'll give your solution a shot, and let you know
how it works out. I'm curious as to what the advantage is to sharing
the internet connection with how you described, over the ICS way.

Thanks

Jim

 

[Marina Roos]

The advantage is that you can control your clients much more with this way,
because the server is doing the DNS, DHCP and if you have W9x, ME or
NT4-clients, WINS. That can all be pushed automatically to the clients. So
if you would want to change for example the IP-range, you would just have to
make those changes on the server. The clients will get updated
automatically, because they are set to obtain an IP and DNS automatically
from the server.

Have fun.

Marina

 

[Jim]

Hi Marina,

I've switched my server to provide routing as you described. I do like
how much more control I have now, but alas, it has not fixed the issue
that I'm experiencing. The client boxes are still not accessing the WWW
correctly. Any other thoughts?

Thanks for the help so far!

Jim

 

[Marina Roos]

Hi Jim,

How many nics in the server? Can you give us the ipconfig/all from the
server and one from a client?
Which errormessage exactly do you get?

Marina

 

[Jim]

Thanks Marina for all of the help that you are providing. As I
mentioned in my original post, I'm not getting error messages from my
clients. They're just not getting traffic from the WWW correctly. They
are able to access the internet, but it's very intermittent. Whereas,
when I go to the same page from my server, everything works fine, and
it's always speedy. The server has two NICs in it.


Here is an ipconfig /all from the server


Windows 2000 IP Configuration

Host Name . . . . . . . . . . . . : euclides
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : Removed - DNS Suffix
provided by ISP

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : Removed - DNS Suffix
provided by ISP
Description . . . . . . . . . . . : Realtek RTL8139(A)-based PCI
Fast Et
hernet Adapter
Physical Address. . . . . . . . . : Removed - MAC Addr
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : Removed - IP of my computer
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Default Gateway . . . . . . . . . : Removed - Default gateway of
my ISP
DHCP Server . . . . . . . . . . . : Removed - DHCP server of my
ISP
DNS Servers . . . . . . . . . . . : Removed - Two DNS servers
from my ISP
Lease Obtained. . . . . . . . . . : Tuesday, October 28, 2003
1:28:11 AM

Lease Expires . . . . . . . . . . : Tuesday, November 04, 2003
1:28:11 A
M

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100+ Management
Adapter

Physical Address. . . . . . . . . : Removed - MAC Addr
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.0.1




This is the ipconfig /all from a client machine (WinXP) experiencing the
problem:


Windows IP Configuration

Host Name . . . . . . . . . . . . : socrates
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : Removed - Specific DNS
Suffix configured on my server.
Description . . . . . . . . . . . : Kingston EtheRx KNE100TX PCI
Fast Et
hernet Adapter (21143-PD)
Physical Address. . . . . . . . . : Removed - MAC Addr
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Tuesday, October 28, 2003
1:27:17 AM

Lease Expires . . . . . . . . . . : Wednesday, November 05, 2003
1:27:17
AM

 

[Marina Roos]

You know that ICS is not advised for working on a server.
Can you post the ipconfig/all from the server without the removals please?
Check the bindingorder of the servernics and make sure the internal nic is
on top.
On the external nic only TCP/IP should be bound.
Install DHCP and DNS-server on your server.

Marina

 

[Jim]

Hi Marina,

Thanks for all of your help with this issue. I ended up finding out that
it is due to SQL Server SP3a. I do not know the details of why it breaks
the routing service, but I just removed SQL for now.

Jim

 

[Marina Roos]

Hi Jim,

Funny. But if you don't need SQL, fine. Still ICW on a server is not
recommended.

Marina