Solved

Unable to register DNS when the systems are directly connected to the internet if ISA 2004 client is installed

Posted on 2008-10-07
5
227 Views
Last Modified: 2012-05-05
Setup: Windows Domain
Server: 2003 RC2 Std (With AD, DNS, ISA 2004)
Clients: Win XP (desktop and Laptop)
Internal IP range: 10.82.4.x

Internet: Leased line, connected directly to Win Server on 2nd NIC., Shared thru ISA Server 2004 with FWC installed on all clients except a few laptops. Those few laptops have the gateway as this server.
Those laptops with the FWC installed, when taken outside office premises and connected onto a different ISP for internet, gets connected, but the DNS still points to the office Win server (private IP). Hence, the IPs do not get resolved and cannot browse except if you know the IP addresses. The laptops ping to all public IP. There is no change even when the FWC is uninstalled. The ipconfig/all shows the public DNS servers of the dialup connection but the nslookup points to the office DNS (10.82.4.4). Corruption is ruled out as all the laptops with FWC are in the same situation.
Those laptops where the FWC was never installed, work fine on the above scenario.
0
Comment
Question by:Bigflicks
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
5 Comments
 
LVL 16

Expert Comment

by:robrandon
ID: 22668378
Is the TCP/IP Properties of the network connection setup to Obtain DNS server addresses automatically?  This is the setting beneath the Obtain IP addresses automatically.  It is possible to get a DHCP IP Address, but not the DHCP DNS servers that way.
0
 

Author Comment

by:Bigflicks
ID: 22685419
Yes the setup is as u said
0
 
LVL 16

Accepted Solution

by:
robrandon earned 500 total points
ID: 22730337
Have you looked through this MS article at all?  It explains the correct way to setup the autodetect settings for ISA 2004 and the FWC.

http://technet.microsoft.com/en-us/library/cc713344.aspx

0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In all versions of ISA Server and the current version of FTMG, the default https protocol uses TCP port 443 and 563 only. This cannot be changed within the ISA or FTMG GUI and must be completed from a Windows cmd prompt on the ISA Server itself. …
Common practice undertaken by most system administrators is to document the configurations and final solutions of anything performed by them for their future use and reference. So here I am going to explain how to export ISA Server 2004 Firewall pol…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question