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Can't browse the Internet on Server 2003.

Posted on 2008-11-19
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Hi,

At the start of the week I noticed that I could not connect to the Internet on several of my Dell Poweredge 830 servers which run Server 2003, it just trys to connect and then a message states that the page cannot be displayed. I could connect to the Internet before. All of the other servers (which are NOT PE 830) can connect with no issues. I can ping all internal devices including the firewall and external devices by IP and their DNS names.

It seems that it is connected to the network fine and has all the correct DNS and default gateway settings but It seems that I just cannot connect? I've been looking into it for several days now with no joy.

In addition to this I have AVG installed on all servers and workstations and updates are not getting through because of this issue. I have updated and restarted the servers (to install them) twice over the past week, could It be a security update for the operating system or IE?
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Question by:NAORC
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by:leegclystvale
ID: 22992983
Proxy server settings?
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by:NAORC
ID: 22993183
This is going to show my naviety, but where can I check the Proxy settings?
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by:leegclystvale
ID: 22993227
Go to internet explorer>Tools>Internet options>Connections>LAN settings.
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by:leegclystvale
ID: 22993234
It may be that your proxy settings are set via a GPO. Are your servers in the same OU in AD yet a differnet OU to the servers that can see the internet?
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by:NAORC
ID: 22993284
I checked the LAN Settings - The only option that is checked is the "Automatically detect settings" Nothing is checked on the Proxy settings.
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by:NAORC
ID: 22993324
I have two different OU's... one for the Domain Controllers and one for the other member servers. The servers that can connect to the internet are in the same OU as the one's that can't.
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by:leegclystvale
ID: 22993521
Do you use a proxy?> check the IE settings on the servers that can get to the net.
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by:NAORC
ID: 22993665
I have just checked the IE Settings on the servers that can see the Internet and they are the same as the servers that cannot see it, i.e. no proxy setup and automatically detect settings is set. I can't seem to put a finger on what could of caused my browser to stop displaying content.
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by:leegclystvale
ID: 22993820
Well it could be an update getting in the way. do a nslookup and post back
Start>Run>type cmd>ok>type nslookup. See if this is the same output on a working server.
also do a tracert and ensure it's going to your default gateway
Start>Run>type cmd>ok>type tracert www.bbc.co.uk
Again this should be the output from a working server, Post back findings.
Are these servers set to download and install all updates automitically without testing?
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by:NAORC
ID: 22994430
nslookup - Working Server

Default Server:  winslet.orcnet.int
Address:  192.168.0.10

nslookup - Non Working Server

Default Server:  winslet.orcnet.int
Address:  192.168.0.10

Tracert - Working server

> tracert www.bbc.co.uk
Server:  www.bbc.net.uk
Address:  212.58.253.67
Aliases:  www.bbc.co.uk

DNS request timed out.
    timeout was 2 seconds.
*** Request to www.bbc.co.uk timed-out

Tracert - Non working server

> tracert www.bbc.co.uk
Server:  www.bbc.net.uk
Address:  212.58.253.67
Aliases:  www.bbc.co.uk

DNS request timed out.
    timeout was 2 seconds.
*** Request to www.bbc.co.uk timed-out

The servers get the updates from a central server (WSUS) which can connect to the internet. They download to the servers and then I press the button to install the updates and restart the servers.
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by:NAORC
ID: 22994871
Update - I am managing to get a trace route response now on the NON WORKING server.

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by:leegclystvale
ID: 22995112
Are these non-working servers on a different switch? Can you ping the default gateway from any non working servers?
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by:NAORC
ID: 22995428
No all of the servers are on the same switch. Yes I can ping the default gateway.
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by:leegclystvale
ID: 22995654
..and still no internet? Have you any entries in the hosts file?
c:\windows\system32\drivers\etc\hosts open with notepad. all lines should start with # except 127.0.0.1 localhost
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by:leegclystvale
ID: 22995673
Are you using IE7?
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by:NAORC
ID: 22995777
Still no Internet, no. I have just looked at the host file and this was my result...

# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

127.0.0.1       localhost

Yes I am using IE7.
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by:leegclystvale
ID: 22995809
Ok, try an IE7 reset. Tools>Internet Options>advanced>Reset.
Weird!
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by:NAORC
ID: 22995873
Still no joy. I'm sorry to be such a pain, I just can't think what it could be!

It's a certain model of server that is having the issues - PE 830. Trying to tie down anything that could relate to those servers?
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by:leegclystvale
ID: 22996524
Did you do any hardware updates from WSUS? Nic drivers?
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by:NAORC
ID: 22999344
No im afraid not. In the update criteria selection I have unchecked all drivers etc from being included in the synchronization process in WSUS. Only critical updates are installed. I tried uninstalling several securityu updates which may of been the cause but to no success.  
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by:leegclystvale
ID: 22999734
What are these servers doing? Are they doing a similar role?
You could try resetting the TCPIP stack i suppose Start>run>cmd>type netsh int ip reset c:\resetlog.txt
You will need to put all your network settngs in again so make a note of the ip, default gateway, mask, DNS etc
Your server will be non-contactable until you've input the networking details.
Clutching at straws at bit now biut this won't hurt and will rule any protocol issues out.
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by:leegclystvale
ID: 22999840
Are the NICS firewalled locally? Seems really strange it's just these model servers?!?!!? It's something simple I reckon.
Can you ping www.bbc.co.uk and get a reply?
Set a non working server to dhcp client and then run ipconfig /release and then ipconfig /renew and try internet. Careful as this will obviously change IP and make it inaccessible until set back.
 
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by:NAORC
ID: 23002230
No. All of the servers within my network infrastructure are connected to a switch which is then connected to our corporate firewall and then to the outside world via our router.

When I try to ping www.bbc.co.uk I get the following results...

Pinging www.bbc.net.uk [212.58.253.67] with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 212.58.253.67:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

This is true of all servers/PC's within my Domain. I can however, browse BBC with no issues on the working servers.
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by:leegclystvale
ID: 23002264
It looks like the beeb has stopped pings as it used to accept them, hence why I said that site and thius is very recent!
Have you looked at the other suggestions:?
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by:NAORC
ID: 23002327
Yes, I have taken into account your advice and will try resetting the TCP/IP stack. I may try the DHCP option when time permits. Thank you very much for the continuing advice, it's most appreciated.  
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by:NAORC
ID: 23002548
I have just looked at the AVG Event logs on all three of the non working servers and have found the following which may narrow it down.

All of the servers last received (successful) AVG updates from the web on 1711/2008.

I looked at my diary and I installed the latest Microsoft updates on the 17/11/2008 and this was when the internet connection seemed to of broke. It looks around the same time too.  

Possible updates of some description?
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by:leegclystvale
ID: 23002635
It would seem so. You need to narrow down which one's I'd say. You may find that my suggestions etc may sort it out, so I'd try that first before delving into the updates if it's difficult to ascertain exactly which updates you installed. Personally I don't update servers from WSUS or the update site without testing as I've been itten in the past with more serious issues than you're having. You've got away lightely if it's just the internet not working, althougha pain in itself.
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by:NAORC
ID: 23002637
The updates that were installed on the 17/11/2008 were...

- KB955069
- KB957097
- KB915597
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by:leegclystvale
ID: 23002641
Cool. I'd remove them one by one and see what happens!
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by:NAORC
ID: 23002648
Yes sure I understand. Going off the subject a little - how do you test them yourself?
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by:leegclystvale
ID: 23002684
You can't cater for every problematic scenario as servers usually run roles independently but they will have common services across the board. The best way would be to use virtualisation and clone a server image to a virtual server and test from there, but obviously that's overkill and expensive in a small environment.
I usually choose a server that has least impact on the network and install updates one by one and ensure services are working etc, if it needs to sync with others or external sources, I'd test that too. Like I said you can't cater for everyhting but these small tests can highlight problems before you've updated across the board.
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by:NAORC
ID: 23002738
Cheers for the heads up.

I will test your possible solutions when I can, once I have done this I will post the results so you can see.

Thanks.
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by:leegclystvale
ID: 23002753
oK. I would also clear your DNS cache
ipconfig /flushdns
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by:NAORC
ID: 23002851
Fixed it.
http://www.avg.com/support
Article 1561:Inactive components and/or blocked internet connection after update to 8.0.196

Thank you for your support on this question. I am new to this whole Experts Exchange, do I reward points to you or?
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leegclystvale earned 300 total points
ID: 23002921
Your profile suggests otherwise though :o)
You can award points for asistance in getting you to the solution, or you can award yourself the points and get them refunded........ makes no odds really.
Glad it's sorted as this type of issue can be a nigtmare and the strangest things can be the cause, hence my suggestions.
 
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