I can't access our work’s website from work

March 17, 2010 at 14:51:38
Specs: XP SP3, Any
Hi

At work I have got a windows 2003 server (Active Directory environment with Exchange) and 10 clients with XP OS, Server 2003 acting as internal DNS

They are connected to a snap gear router which is connected to an ADSL modem.

We have got a work’s website suppose it is called: www.works.org.nl which is hosted with external provider I cannot access our work’s website www.works.org.nl from any PC at work but I have got no problem to access any other websites.

From work when I ping the our work website www.works.org.nl it times out but it gives me this ip address 234.56.79.104 ,,,,,,,,,,not the real ip address please pay attention to last octet

From home when I ping our work website www.works.org.nl it does not time out (means there is a reply) but it gives me this ip address 234.56.79.20,,,,,,,, not the real ip address only last octet is different comparing to ip address at work.

From home I have got no problem to access our work’s website www.works.org.nl

1- What I did I put the IP address I got when I ping from home in the address bar of our work computer, it didn't work

2- I cleaned DNS cache by applying below on the server 2003

ipconfig /flushdns
net stop dnscache
net start dnscache

On the Active Directory I did clear DNS cache by doing this Administrive tools -- > DNS --> Right click clear cache,,,,,but still no joy.
or as explained in Figure C in the link below
http://articles.techrepublic.com.co...

Thanks


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#1
March 17, 2010 at 17:31:30
If the www.works.org.nl it is located inside your work network, you have to use the local ip address of the server to get access to it.
So in the DNS server settings, works.org.nl it also has to be listed with the servers private ip address.
So all client computers gets the ip address from the local DNS server. This DNS server hands out the local IP address of the server and you should get the web site of your server.

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#2
March 17, 2010 at 22:01:27
Hi Paul

>>If the www.works.org.nl it is located inside your work network, you have to use the local ip address of the server to get access to it.<<
What do you mean located inside my work network ??, the local static ip address for the server is 192.168.0.50 and it was assigned statically to each client PC as a primary DNS address and alternate DNS server address is a public ip (204.3.x.x)


>>So all client computers gets the ip address from the local DNS server. <<
Is this what you meant
((and 192.168.0.50 was assigned statically to each client PC as a primary DNS address and alternate DNS address is a public ip (204.3.x.x) ))

Thanks


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#3
March 18, 2010 at 02:47:56
Ok, what I meant is, when your server http://www.works.org.nl/ also has a private IP of 192.168.0.x, you have to access the server from inside your network (192.168.0.x) by using the web servers private IP address.
E.g. http://www.works.org.nl/ has IP 192.168.0.50, at the client computer, you have to use:
http://192.168.0.50
to access the server.
Or you have to create a DNS A record for works.org.nl that points to the private IP address 192.168.0.50.

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Related Solutions

#4
March 18, 2010 at 03:15:36
Hi Paul

I will reply to your later comment.

But first let me expalin to you what I have done it might help you more to understand the stituaion.

From home on my laptop I pinged www.works.org.nl result was successful Reply and I got an ip address which was : 234.56.83.20 (not real ip address)

I did test at home I typed in a IE and Mozillah this : http://234.58.83.20 , the message that I received as below :

>>If you can see this page, then the people who manage this server have installed cPanel and WebHost Manager (WHM) which use the Apache Web server software and the Apache Interface to OpenSSL (mod_ssl) successfully. They now have to add content to this directory and replace this placeholder page, or else point the server at their real content.<<

I recoreded the home ip address (234.58.83.20) in a peice of paper and I used it in the address bar of IE and Mozilla at work (server and workstation) ,,,,I received the same message as well
>>If you can see this page, then the people who manage this server have installed cPanel and WebHost Manager (WHM) which use the Apache Web server software and the Apache Interface to OpenSSL (mod_ssl) successfully. They now have to add content to this directory and replace this placeholder page, or else point the server at their real content.<<


At work on the server and workstation I pinged www.works.org.nl result was timed out and the ip address that I have got was : 234.56.79.104 (not real ip address)


From work I pingged 234.56.79.104 (not real ip address),,,,,result was timed out

From home I pingged 234.56.79.104 (not real ip address),,,,,result was timed out as well.

I typed in this ip address in the address bar of server 's IE and Mozilla ,,,,error message : The page can not be displayed

I typed in this ip address in the address bar of laptop 's IE and Mozilla ,,,,error message : The page can not be displayed as well

Thanks


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#5
March 18, 2010 at 05:04:17
So the question is, what public ip address should be assigned to works.org.nl?
I guess 234.56.83.20 is assigned, because of the reply when using that ip address in browser.

The reason for to get no reply to a ping is most likely a firewall problem. I don't know, whether your server is secured by firewall, but you also have to check that.


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#6
March 18, 2010 at 14:54:38
Hi Paul

Under "Forward Lookup Zone" there are three subzones:

msdcs.works.local

works.local

works.org.nl

First I added www that is associated with 192.168.0.50 (before the last one in the table) under "works.org.nl" subzone as in the figure below

http://i41.tinypic.com/23jk3yb.jpg

Then I removed only entry for www that was associated with ISP DNS (i.e. public ip address last one in the table) from that subzone ,as depicted in the snap shot below


http://i39.tinypic.com/r09w68.jpg


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#7
March 18, 2010 at 17:22:11
Ok, so what ip addresses did you get back, when pinging:
ping works.org.nl
ping www.works.org.nl

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#8
March 18, 2010 at 17:53:44
On the work's server (not worstation)I did what you have advised me

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\itsupport>ping www.works.org.nl

Pinging www.works.org.nl [192.168.0.50] with 32 bytes of data:

Reply from 192.168.0.50: bytes=32 time<1ms TTL=128
Reply from 192.168.0.50: bytes=32 time<1ms TTL=128
Reply from 192.168.0.50: bytes=32 time<1ms TTL=128
Reply from 192.168.0.50: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.0.50:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Documents and Settings\itsupport>ping works.org.nl
Ping request could not find host works.org.nl. Please check the name and try again

Thanks


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