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cannot surf to own website ....???

Posted on 2006-05-22
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Last Modified: 2010-07-27
Helllo,

We have a sbs 2003 premium with isa 2004.
We can surf all website internalle, except our own website!
External interfaces can surf our website correctly.

We get this error:

The website cannot be found  
 
 Explanation: The IP address for the website you requested could not be found.

Try the following:
Refresh page: Search for the page again by clicking the Refresh button. The timeout may have occurred due to Internet congestion.
Check spelling: Check that you typed the Web page address correctly. The address may have been mistyped.
Access from a link: If there is a link to the page you are looking for, try accessing the page from that link.
If you are still not able to view the requested page, try contacting your administrator or Helpdesk.

 
 
 Technical Information (for support personnel)
Error Code 11001: Host not found
Background: This error indicates that the gateway could not find the IP address of the website you are trying to access. This is usually due to a DNS-related error.
Date: 22/05/2006 16:23:12
Server: ******
Source: DNS error
 

What could be the problem here??
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Comment
Question by:suppsaws
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17 Comments
 
LVL 15

Expert Comment

by:nprignano
ID: 16737358
If your internal DNS is not setup for the internal IP of the website (point www to the internal address of the webserver) and the host headers are not setup correctly for the website, or if you have assigned a public IP to the website in IIS, the ISA server will drop internal requests to your public IP.  you need to setup dns and/or iis properly to work around this.


nprignano
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16737584
Are you talking about Companyweb or a seperate web service on the SBS server? Is the web site on a different server on the domain?
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16737601
From a cmd prompt, type in nslookup name_of_web_server

Do you get the external IP address (as used by people who are on the Internet) or a local ip address that is on your LAN?
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LVL 21

Author Comment

by:suppsaws
ID: 16740712
I am getting the local ip of my server ... .
How can I change this?
Some settings in the dns mgmt?
0
 
LVL 21

Author Comment

by:suppsaws
ID: 16740808
other sites are resolving fine, only the site of the company itself isn't giving the external ip after nslookup.
The website is hosted on another location, so I don't think that could be the problem??
0
 
LVL 15

Expert Comment

by:nprignano
ID: 16741973
If the website is hosted elsewhere, is your internal domain name the same as the domain name of the website?

example: internal - mydomain.com  website - www.mydomain.com (w/ external IP)

If this is the case, in your DNS database create a host record for www (or modify the exisiting) and set the IP as the public IP of the webserver that hosts the site. this would not work if you hosted internally, and in addition you will not be able to reach the default company web using www any longer - but you could create a host record of intra.yourdomain.com if you still want access to the comapnyweb.


nprignano
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16744393
Sorry for the delay; been at work.

This is SBS so we need to be careful here. SBS provides OWA/OMA, Sharepoint, RDP, RWW, VPN etc all based around the local web site.

0
 
LVL 15

Expert Comment

by:nprignano
ID: 16746087
so, keith, what's your suggestion?
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16746202
I think the asker will need to create a different A record for his external web site in his local DNS; something like www2 but assign the external IP address to it.
0
 
LVL 21

Author Comment

by:suppsaws
ID: 16748825
the liocal domain is domain.local, so I really don't see why this interfears with the external domainname, which is domain.com, and is located at another external ip
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16748858
On a machine that gets the error message,
open a cmd prompt and type as I asked above.

nslookup the_web_site_URL_that_you_put_in_the_browser.
What result do you get back?


0
 
LVL 21

Author Comment

by:suppsaws
ID: 16748956
nslookup www.domain.be
Server:  server.domain.local
Address:  192.168.16.2

*** server.domain.local can't find www.domain.be: Non-existent domain
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 16754622
In your DNS server, what are your forwarder tab entries? Are these set to your ISP?
If you open ISA server gui,
click on monitoring - logging - click on start query

try the nslookup again, do you see any error messages in the ISA log?
0
 
LVL 21

Author Comment

by:suppsaws
ID: 16758302
Keith,

forwarders are set to the isp.

When I enable logging, I get many 'closed connections' on port 80
destination ip's are:
62.179.105.7
216.239.59.147
213.46.242.72
66.135.192.220
213.46.242.95
216.239.59.104
etc etc
I wonder where all these ip's come from ... .
all from localhost to external

I am also getting two 'dienied connections' from ip 87.244.150.156 on destination port 712 (ext to localhost)

strange things?
0
 
LVL 21

Author Comment

by:suppsaws
ID: 16758326
Keith,

When I do an nslookup of domain.com (instead of www.domain.com), I am getting these results:


nslookup domain.be
Server:  server.domain.local
Address:  192.168.16.2

Name:    domain.be

So I am not getting any non-authoritative answer
when I do an nslookup at home, I am getting this:
Non-authoritative answer:
Name:    domain.be
Address:  213.193.*.*
0
 
LVL 21

Author Comment

by:suppsaws
ID: 16841296
I solved it by adding a dns zone domain.be
now it works fine

question can be closed please
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