Client PCs cant acces web page

bino · Post by **bino** » Wed May 14, 2003 7:29 pm

hi all

I have a problem with my network

I have a cable acces shared by an win2000 PRO SERVER PCs. All works fine except one thing

I cant acces some web page with my client PCs. they are under winXP.

Here is my configuration :

Win2000 server
2 WinXP client

my cable modem enter in my win2000 PC and i have another network card link up to a hub to shared my internet.

Someone told me that the problem is the MTU but i think that it's not the case because all PC have the value 1500.

When my server was on madrake, all works fine so i think that i must change some setting in my win2000 pc.

please dont tell me to install mandrake

tanks a lot!

Norm · Post by **Norm** » Wed May 14, 2003 7:49 pm

Someone else can help with network setup.

I just thought you should be sure that a popup stopper or script blocker wasn't the culprit before you go changing the network around. If it's only "some" sites, it may also be a DNS cache problem.

Check these things first, while you're waiting, and reply back.

Also, IE6 updates may have taken out Java support. You may need the latest virtual machine from MS, or use the Sun version.

twwabw · Post by **twwabw** » Wed May 14, 2003 7:50 pm

Is the 2000 server a DC? If so, do you have DNS forwarders configured? Also, what are your DHCP scope options? This sounds like a DNS configuration problem.

bino · Post by **bino** » Wed May 14, 2003 9:25 pm

Originally posted by Norm
Someone else can help with network setup.

I just thought you should be sure that a popup stopper or script blocker wasn't the culprit before you go changing the network around. If it's only "some" sites, it may also be a DNS cache problem.

Check these things first, while you're waiting, and reply back.

Also, IE6 updates may have taken out Java support. You may need the latest virtual machine from MS, or use the Sun version.

My pop-up stopper is disabled

how can i check for DNS cache problem?

Yeah, I have IE6 and i'va installed java from sun but I dont know if it works good

bino · Post by **bino** » Wed May 14, 2003 9:32 pm

Originally posted by twwabw
Is the 2000 server a DC? If so, do you have DNS forwarders configured? Also, what are your DHCP scope options? This sounds like a DNS configuration problem.

sorry, dont understand what a DC is

i'm french so i have some problem with english acronomyme

I did not configure any DHCP scope option, i dont know what it is so...

thanks for your help

Post by **YeOldeStonecat** » Wed May 14, 2003 9:33 pm

Originally posted by bino
sorry, dont understand what a DC is
i'm french so i have some problem with english acronomyme

I did not configure any DHCP scope option, i dont know what it is so...

thanks for your help

You say "Windows 2000 Server"...is it really Win2K Server, or Windows 2000 Professional running ICS that you call a "server".

Norm · Post by **Norm** » Wed May 14, 2003 9:47 pm

Originally posted by bino
My pop-up stopper is disabled

how can i check for DNS cache problem?

Yeah, I have IE6 and i'va installed java from sun but I dont know if it works good

Some popup stoppers create a HOSTS file that is still there even if disabled. Search your PC for a file called HOSTS and rename it to test if that's the problem. Close all open IE windows before you do it.

To Flush DNS
Click on the Start Menu then RUN. In the window type "cmd" without the quotes and hit enter. In command window that opens type:

ipconfig /flushdns then hit enter

Also - By default Windows 2K & XP cache everything in the DNS cache service, both correct and faulty DNS lookups. To increase performance by eliminating the caching of faulty DNS lookups, change the following values from whatever their original values are to zero.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servi
ces\Dnscache\Parameters]
"NegativeCacheTime"=dword:00000000
"NetFailureCacheTime"=dword:00000000
"NegativeSOACacheTime"=dword:00000000

bino · Post by **bino** » Wed May 14, 2003 11:36 pm

Originally posted by YeOldeStonecat
You say "Windows 2000 Server"...is it really Win2K Server, or Windows 2000 Professional running ICS that you call a "server".

it's win2k server

bino · Post by **bino** » Wed May 14, 2003 11:52 pm

Originally posted by Norm
Some popup stoppers create a HOSTS file that is still there even if disabled. Search your PC for a file called HOSTS and rename it to test if that's the problem. Close all open IE windows before you do it.

To Flush DNS
Click on the Start Menu then RUN. In the window type "cmd" without the quotes and hit enter. In command window that opens type:

ipconfig /flushdns then hit enter

Also - By default Windows 2K & XP cache everything in the DNS cache service, both correct and faulty DNS lookups. To increase performance by eliminating the caching of faulty DNS lookups, change the following values from whatever their original values are to zero.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servi
ces\Dnscache\Parameters]
"NegativeCacheTime"=dword:00000000
"NetFailureCacheTime"=dword:00000000
"NegativeSOACacheTime"=dword:00000000

I flush my DNS cache and I change de value of the DWORD var but nothing change...

I dont know if it's a util info but I can view the web page from my server PC ...

Here is some of the web page that i cant view...

GP3 league

hall of fame

yeah, i'm a racing-sim fan

twwabw · Post by **twwabw** » Thu May 15, 2003 5:33 am

Originally posted by bino
sorry, dont understand what a DC is
i'm french so i have some problem with english acronomyme

I did not configure any DHCP scope option, i dont know what it is so...

thanks for your help

DC = Domain Controller. Are you set up as a Domain? If so, you had to configure DNS on this server. Or is it just running as a member server in a peer-to-peer Lan? What is running DHCP? Your router or the server?

bino · Post by **bino** » Thu May 15, 2003 9:17 am

Originally posted by twwabw
DC = Domain Controller. Are you set up as a Domain? If so, you had to configure DNS on this server. Or is it just running as a member server in a peer-to-peer Lan? What is running DHCP? Your router or the server?

I'm not in a domain.

I dont have router, I have a hub so the DHCP is running by my server...

twwabw · Post by **twwabw** » Thu May 15, 2003 9:31 am

Please.... more details!! You're spoon feeding us little bits of info., and I need more to help. Are you running ICS on the 2K server? Or are you running 3rd party proxy software? 2 NICs I'm assuming. How are TCP properties set on the NICs? Are DNS settings manually entered? Are they your ISPs DNS servers? If you run ipconfig /all what are the results? What are TCP/IP properties of the clients?

I'm sure we can help you, but we need some specifics. I still believe it is DNS. Also, if you set up DHCP, you configured no scope options at all?

Post by **YeOldeStonecat** » Thu May 15, 2003 9:44 am

I'm figuring it's the same thing as TWW is saying.

How is your 2K Server setup...literally...all the details. What TCP properties does it have...all the details...gateway, DNS, etc. And what TCP properties are the clients being given ..again, details...gateway, DNS, etc etc.

bino · Post by **bino** » Thu May 15, 2003 9:37 pm

ok i'll write down all my setting but tomorow because i dont have the time tonight.

sorry if i did not tell any detail before, i'm not good in english so i have problems when it's time to express something's that is not congrete(? )

thanks again for your help!

Post by **YeOldeStonecat** » Fri May 16, 2003 9:35 am

Originally posted by bino
ok i'll write down all my setting but tomorow because i dont have the time tonight.

sorry if i did not tell any detail before, i'm not good in english so i have problems when it's time to express something's that is not congrete(? )

thanks again for your help!

It's not a problem...we'll get there. Just may take a few "back and forths".

monty · Post by **monty** » Sat May 17, 2003 12:43 am

Someone told me that the problem is the MTU but i think that it's not the case because all PC have the value 1500

The problem could be your MTU is set too high. Try dropping it down to 1492. I had the web page (and email) problem with a Cisco 802 IDSL router. A nice Cisco tech figured it out for me.

twwabw · Post by **twwabw** » Sat May 17, 2003 4:42 am

Hmmm.... MTU of 1500 should not be an issue with a cable modem ( I don't believe). Thought that was only a DSL issue. Hopefully someone more knowledgeable tha me on MTU settings will pop in and clear that up.

Hope bino posts back- this is interesting. But, I'm outa' here until Monday afternoon.

Post by **YeOldeStonecat** » Sat May 17, 2003 6:57 am

I've only seen MTU affect e-mail when it had attatched files...plain e-mails would send fine, but mail with an attatchment of any size would error out on an SMTP error.

Lets do some narrowing down here....those two sites below...can you tracert and ping from the server and the clients?

Pinging http://www.grandprix3.net should come back resolving to mercure.grandprix4.net which is 194.250.105.190

Your second linke should resolve hof3.sim-racing.net to http://www.sim-racing.net at 212.5.70.173

Try running pings to the above from both your server, and your workstations. My hunch is if it's a DNS issue, your workstations will not be able to resolve that name to an IP. If they can resolve those names to an IP, then perhaps there's something else like MTU as the cause.

bino · Post by **bino** » Mon Jun 16, 2003 3:08 pm

Originally posted by YeOldeStonecat
I've only seen MTU affect e-mail when it had attatched files...plain e-mails would send fine, but mail with an attatchment of any size would error out on an SMTP error.

Lets do some narrowing down here....those two sites below...can you tracert and ping from the server and the clients?

Pinging http://www.grandprix3.net should come back resolving to mercure.grandprix4.net which is 194.250.105.190

Your second linke should resolve hof3.sim-racing.net to http://www.sim-racing.net at 212.5.70.173

Try running pings to the above from both your server, and your workstations. My hunch is if it's a DNS issue, your workstations will not be able to resolve that name to an IP. If they can resolve those names to an IP, then perhaps there's something else like MTU as the cause.

hey hi all!

sorry, i'm very busy this summer

Ok YeOldeStonecat , you're right, I've made a ping of the two web site and youre conclusion nis good!

With my server, i can ping the web site but with my workstation, i cant resolve the host.

in the next post, i'll show the setting of my server Pc.

thanks all!

bino · Post by **bino** » Mon Jun 16, 2003 3:18 pm

ok, here is my network setting :

I have two card in my network properties
01. LAN
02. internet

01. LAN :
here is the componet installed on this card : (sorry if it's not the right spelling, i have a french windows

)
microsoft network client
file and printer sharing for microsoft
Apple talk protocol
TCP/IP
network monitor driver(pilote de moniteur reseau in french)

here is the setting of the TCP/IP
I used a static IP :
192.168.0.1
255.255.255.0
i used a static DNS server
127.0.0.1
Avance setting on demands but it's defaut setting

02. internet
here is the componet installed on this card :
microsoft network client
file and printer sharing for microsoft
Apple talk protocol
TCP/IP
network monitor driver(pilote de moniteur reseau in french)

here is the setting of the TCP/IP
used a dynamic IP and DNS server

in advanced setting :
in IP parameter tab
under IP adress : DHCP activate

the rest is the defaut setting i think

do i forget someting?

thanks again