Solved

Configuring a computer for ICS from an existing peer to peer network

Posted on 2004-04-20
8
235 Views
Last Modified: 2010-03-18
I have a peer-to-peer network set up with about 12 computers.  Each computer currently has a static IP address and we connect to the Internet via a DSL modem connected directly to our hub.  The computers are running Windows 2000 Pro or XP Pro and have Norton Internet Security (including anti-virus).  We are switching to a new DSL provider with a single static IP.  I have installed a second ethernet card in a system with 2000Pro for use as the ICS host (referred to as file server) and reconfigured the card to connect to the new DSL modem.  I can access the Internet and email from the file server.  I’ve configured this computer for Internet sharing including configuring the default ports.  I’ve taken 2 of the other computers, reconfigured the TCP/IP for automatic IP addresses, and can access the file server.  I’ve reconfigured Norton to allow access for the new IP address ranges. I’ve even moved the 3 computers for this test to a separate hub to isolate them from the existing network.

Problem:

I cannot access the Internet from the other computers.  From these computers, I can ping (get a response from a ping) both cards on the file server but cannot ping the gateway or the DNS servers as I can from the file server.  I’ve disabled the Norton temporarily but it doesn’t help and I don’t want to run my file server without a firewall.

Questions:

Even though I’ve disabled Norton’s on all systems, is there something that could be running in the background that is still blocking the connection?
Should I completely remove all network connections from all machines and start over as if it were a new network since the original network was configured as peer-to-peer?
Is there something else I missed?
0
Comment
Question by:DWG57
[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
  • 4
8 Comments
 
LVL 57

Expert Comment

by:Pete Long
ID: 10870576
you dont say what OS the clients are?

To Troubleshoot ICS
http://www.practicallynetworked.com/sharing/ics/ics_troubleshoot.htm
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 10870581
if there are any XP machines in the equation ensure ICF is disabled on them

Windows XP Built in Firewall (ICF)

The (Internet Connection Firewall) that ships with XP while not a bad thing us usually the cause of most home networking "woes"

You should get a reliable Firewall if you spend any time online

***Not Free***
Zone Alarm http://www.zonelabs.com/store/content/home.jsp
Norton http://www.symantec.com/sabu/nis/npf/
Black Ice http://blackice.iss.net/

***To Disable Windows XP Firewall***

1.  Open Network Connections (Click Start, click Control Panel, and then double click Network Connections.)
 
2.  Click the Dial up, LAN or High–Speed Internet connection that you want to protect, and then, under Network Tasks, click Change settings of this connection.
 
3.  On the Advanced tab, under Internet Connection Firewall, select the following:  Clear the Protect my computer and network by limiting or preventing access to this computer from the Internet check box. This disables the firewall, your computer and network are then vulnerable to intrusions.
0
 

Author Comment

by:DWG57
ID: 10870978
The ICS was set up on a system running 2000 Pro and of the 2 clients, one was 2000 Pro and one was XP Pro
0
 
LVL 57

Accepted Solution

by:
Pete Long earned 125 total points
ID: 10871075
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 11316749
your call?
0

Featured Post

Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

Question has a verified solution.

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

A brief overview to explain gateways, default gateways and static routes OR NO - you CANNOT have two default gateways on the same server, PC or other Windows-based network device. In simple terms a gateway is formed when a computer such as a serv…
Many of us in IT utilize a combination of roaming profiles and folder redirection to ensure user information carries over from one workstation to another; in my environment, it was to enable virtualization without needing a separate desktop for each…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

733 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