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7.4

Internal Server cannot access web sites

Asked by gratiot in MS Forefront-ISA

Tags: cannot, access, server, web

Here is the issue:  I get the following browser error when trying to go to any external website from an internal server behind an ISA 2006 server.

 Network Access Message: The page cannot be displayed  
 
 Explanation: The Web server refused the connection.

Try the following:
Refresh page: Search for the page again by clicking the Refresh button. The timeout could have occurred due to Internet congestion.
Check spelling: Check that the Web page address is spelled 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.
Contact website: You may want to contact the website administrator to make sure the Web page still exists. You can do this by using the e-mail address or phone number listed on the website home page.
If you are still not able to view the requested page, try contacting your administrator or Helpdesk.

 Technical Information (for support personnel)
Error Code 10061: Connection refused
Background: The server you are attempting to access has refused the connection with the gateway. This usually results from trying to connect to a service that is inactive on the server.
Date: 11/3/2007 7:59:48 PM [GMT]
Server: ISA
Source: Remote server

Here is some info:

ISA Server:
------------------------
Verison 2006
Server Version: Windows 2003 R2

External Network Card:
IP: 10.255.1.5/24
DG: 10.255.1.1

Internal Network Card:
IP: 10.32.11.253/24
DNS: 10.32.11.12, 10.32.11.13

Route Print:
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0       10.255.1.1       10.255.1.5     10
        10.32.0.0      255.255.0.0       10.32.11.1     10.32.11.253      5
       10.32.11.0    255.255.255.0     10.32.11.253     10.32.11.253     10
     10.32.11.253  255.255.255.255        127.0.0.1        127.0.0.1     10
       10.255.1.0    255.255.255.0       10.255.1.5       10.255.1.5     10
       10.255.1.5  255.255.255.255        127.0.0.1        127.0.0.1     10
   10.255.255.255  255.255.255.255     10.32.11.253     10.32.11.253     10
   10.255.255.255  255.255.255.255       10.255.1.5       10.255.1.5     10
        127.0.0.0        255.0.0.0        127.0.0.1        127.0.0.1      1
        224.0.0.0        240.0.0.0     10.32.11.253     10.32.11.253     10
        224.0.0.0        240.0.0.0       10.255.1.5       10.255.1.5     10
  255.255.255.255  255.255.255.255     10.32.11.253     10.32.11.253      1
  255.255.255.255  255.255.255.255       10.255.1.5       10.255.1.5      1
Default Gateway:        10.255.1.1
===========================================================================
Persistent Routes:
  Network Address          Netmask  Gateway Address  Metric
        10.32.0.0      255.255.0.0       10.32.11.1       5


Internal IS Server:
--------------------------------

IP: 10.32.11.24/24, 10.32.11.16/24, 10.32.11.18/24
DG: 10.32.11.253
DNS: 10.32.11.12, 10.32.11.13

Route Print:

Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     10.32.11.253      10.32.11.16     10
         10.1.1.0    255.255.255.0       10.32.11.1      10.32.11.16      5
         10.5.1.0    255.255.255.0       10.32.11.1      10.32.11.16      5
        10.15.0.0      255.255.0.0       10.32.11.1      10.32.11.16      5
        10.32.0.0      255.255.0.0       10.32.11.1      10.32.11.16      5
       10.32.11.0    255.255.255.0      10.32.11.16      10.32.11.16     10
      10.32.11.16  255.255.255.255        127.0.0.1        127.0.0.1     10
      10.32.11.18  255.255.255.255        127.0.0.1        127.0.0.1     10
      10.32.11.24  255.255.255.255        127.0.0.1        127.0.0.1     10
        10.33.0.0      255.255.0.0       10.32.11.1      10.32.11.16      5
   10.255.255.255  255.255.255.255      10.32.11.16      10.32.11.16     10
        127.0.0.0        255.0.0.0        127.0.0.1        127.0.0.1      1
        224.0.0.0        240.0.0.0      10.32.11.16      10.32.11.16     10
  255.255.255.255  255.255.255.255      10.32.11.16      10.32.11.16      1
Default Gateway:      10.32.11.253
===========================================================================
Persistent Routes:
  Network Address          Netmask  Gateway Address  Metric
        10.32.0.0      255.255.0.0       10.32.11.1       5
        10.33.0.0      255.255.0.0       10.32.11.1       5
        10.15.0.0      255.255.0.0       10.32.11.1       5
         10.5.1.0    255.255.255.0       10.32.11.1       5
         10.1.1.0    255.255.255.0       10.32.11.1       5

Proxy Settings: Address 10.32.11.253 Port 8080
----------------------------------------------------------------------------------------------------------------------------

Ok so when I try to go to a websites, like www.google from the internal web server I get the error I described above and the ISA server shows the following in the log:

Destination IP: 64.233.167.99
Destination Port: 80
Protocol: HTTP
Action: Failed Connection Attempt
Rule: Web Access
Client IP: 10.32.11.16
Client username: anonymous
Source Network: Internal
Destination Network: External
HTTP method: GET
URL: http://www.google.com
----------------------------------------------------------------------------------------------------------------------
The Rule is:
Order: 1
Name: Web Access
Action: Allow
Protocols: HTTP/HTTPS
From/Listener: Internal
To: Exeternal
Condition: All Users
-------------------------------------------------------------------------------------------------------------------
Web Proxy settings on the ISA server have been enabled HTTP/8080

I need possible solutions quickly.
[+][-]11/05/07 01:03 PM, ID: 20219457Accepted Solution

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About this solution

Zone: MS Forefront-ISA
Tags: cannot, access, server, web
Sign Up Now!
Solution Provided By: gratiot
Participating Experts: 2
Solution Grade: B
 
[+][-]11/03/07 05:32 PM, ID: 20208614Expert Comment

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[+][-]11/03/07 06:05 PM, ID: 20208686Author Comment

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