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windows 2003 server connectivity problem

After a server reboot my server came back up fine.  I am now unable to ping the server from the network and I can not ping the networ from the server. Everything appears to be fine with the network card.
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bidgadget
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bidgadget
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2 Solutions
 
MazdajaiCommented:
Did you check the details of ipconfig for any type of misconfiguration?

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Justin OwensITIL Problem ManagerCommented:
Some things jump right out.... For example, does the Link light on your NIC illuminate?  Does Windows report that you actually have an enabled NIC connected (as opposed to disabled or partially connected)?

If yes to both of the above, can you ping the computer's IP address from itself (NIC address)?
If yes, can you ping the computers NETBIOS name from itself?

From other computers, what errors do you get when you ping the errant server by name and by IP?

DrUltima
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bidgadgetAuthor Commented:
Checked all that  not a name res problem and ipconfig looks good. Thank you.
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Justin OwensITIL Problem ManagerCommented:
Please paste in the results of the ping tests mentioned in http:#a35441550 (server self test portion).  You can sanitize if needed....

DrUltima
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bidgadgetAuthor Commented:
I get all replys when pinging itself.
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Justin OwensITIL Problem ManagerCommented:
But you cannot ping your gateway from the errant server?
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bidgadgetAuthor Commented:

No can not ping anywhere but itself. Also when I reboot it works for about 2 min then the network issues start.
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MazdajaiCommented:
Assuming it is static IP, can you change the IP address temporary?

If that did not help - What is the server role?
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bidgadgetAuthor Commented:



Server is a domain controller. I also tried to Change IP and switch adapter. Also I disabled virus software.
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Justin OwensITIL Problem ManagerCommented:
Did you try using a different ethernet cable?  That it is a DC changes things, though.  You say it "works for two minutes" and then stops.  Do you see anything in the event viewer on the server?

DrUltima
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bidgadgetAuthor Commented:

I will give that a try. I am on my way to the office. I will get Back to you.
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ChiefITCommented:
This sounds a little more like a system state firewall is blocking ICMP echo.
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Justin OwensITIL Problem ManagerCommented:
Chief,

That is an excellent observation and one I should have thought of sooner.  I think tunnel vision is the appropriate term here.... ;-)

DrUltima
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ChiefITCommented:
Upon reboot, the firewall service will not start automatically. So, you have about a 2 minute time period that a firewall isn't blocking pings. A computer that pings itself initiates the communications, so a system state firewall will answer itself. Another computer is blocked because it wasn't the problem child that initiated the conversation.

The term 'system state' means a firewall that will block any traffic it didn't initiate. So, if you ping yourself, you initiate the traffic, and the firewall will not block it. If another computer initiates a ping to this computer, the firewall blocks it. Since you had a two minute window of free time to ping when booting up, it appears your firewall doesn't start until about 2 minutes after boot up. I think all inclusively, this is no doubt a system state firewall that is blocking ICMP echo (PING)>
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bidgadgetAuthor Commented:
Thank you all for your help.  The actual problem had to do with the ipsec policy on the server.  I had to delete the local ipsec policy in the registry and reboot the server and it worked.  Thanks for your help.
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