ARP DNS Problems?

External Since: Dec 24, 2007 Posts: 6

I have 3 regular network users who lose internet/network connections
daily. The problem seemed to develop back when a DNS sever that was a
Windows 2000 Domain controller was lost forever. The DNS server was
replaced with a new Domain Controller on a new machine with Windows
2003 installed. At first is was with a laptop user who takes laptop
with home every night. Now it has spread to two other users. As a test
one user was switch to a new network cable that goes to a main switch
on the network directly after the firewall. Connection is still lost
for that user.

The following are the steps I take to fix network access for the 3
which has to be done multiple times a day.

1st. On a machine that has problems connecting. I logged in as the
administrator and attempted to access the internet and got no
connection.
2nd I changed the name of the work station from test to test1 to see
if that made a difference to with the internal DNS. I rebooted the
workstation to and attempted to access the internet and I got no
connection with test machine.
3rd. I changed the workstation name back to test and rebooted the
workstation. I deleted the DNS cache on Server66 (new machine with Win
2003) to see if this made a difference, I got no connection with test
machine.
4th. I cleared the DNS cache on Server22 to see if this made a
difference I got no connection with test machine.
5th I cleared the ARP cache from the firewall and was finally able to
get the internet working on the test computer.

External Since: Aug 27, 2007 Posts: 314

Hello ,

Please give some more info about the DNS setup, how many DNS servers and
is DNS running as Active directory integrated zones? Also post an unedited
ipconfig /all form the problem machine and the DNS server.

Best regards

Meinolf Weber
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> I have 3 regular network users who lose internet/network connections
> daily. The problem seemed to develop back when a DNS sever that was a
> Windows 2000 Domain controller was lost forever. The DNS server was
> replaced with a new Domain Controller on a new machine with Windows
> 2003 installed. At first is was with a laptop user who takes laptop
> with home every night. Now it has spread to two other users. As a test
> one user was switch to a new network cable that goes to a main switch
> on the network directly after the firewall. Connection is still lost
> for that user.
>
> The following are the steps I take to fix network access for the 3
> which has to be done multiple times a day.
>
> 1st. On a machine that has problems connecting. I logged in as the
> administrator and attempted to access the internet and got no
> connection.
> 2nd I changed the name of the work station from test to test1 to see
> if that made a difference to with the internal DNS. I rebooted the
> workstation to and attempted to access the internet and I got no
> connection with test machine.
> 3rd. I changed the workstation name back to test and rebooted the
> workstation. I deleted the DNS cache on Server66 (new machine with Win
> 2003) to see if this made a difference, I got no connection with test
> machine.
> 4th. I cleared the DNS cache on Server22 to see if this made a
> difference I got no connection with test machine.
> 5th I cleared the ARP cache from the firewall and was finally able to
> get the internet working on the test computer.