Network Address Translation/Internet Sharing keeps going down..Help

From: Chris House (ch_at_markjrees.co.uk)
Date: 03/31/04


Date: Wed, 31 Mar 2004 05:35:34 -0800

Our client has got network address translation running a
Windows 2003 server. they've got 7 workstation computers
on the network.

NAT has been sharing the broadband ADSL internet
connection for about a month and has been working
perfectly. Each computer can access the internet from
their workstation via the server.

Here's the problem:

At various times during the day (about 4 times a day)
their internet access goes down. No workstations can view
any web pages nor can the server.

To get it back online again we have to disable the
internal network interface and then re-enable it. It only
takes a couple of seconds to do so but it's beginning to
be a real pain. There are no errors in Event Viewer and
we've confirmed it's not a problem with the ISP.

Routing and remote access does not give any visible
errors about anything being down or offline but it does
seem as though the problem is being caused somewhere near
to where NAT passes the internal network traffic onto the
external internet interface.

Any help on this would be greatly appreciated.



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