w2k dns unwanted calls

  • Thread starter Thread starter Ermanno
  • Start date Start date
E

Ermanno

W2k server (dns server, domain controller, wins server) +
router ISDN as gateway and nothing else.
The router make calls also during the night (a lot of
calls and a lot of money lost).
I need an help
Grazie
 
In
Ermanno said:
W2k server (dns server, domain controller, wins server) +
router ISDN as gateway and nothing else.
The router make calls also during the night (a lot of
calls and a lot of money lost).
I need an help
Grazie
Click to expand...

The first thing to check is the DNS search list on all machines. If there is
a name that is not on the DNS server it will be forwarded or DNS will use
recursion to resolve it.

An ipconfig /all will help.
 
Hi Grazie,
When you say nothing else, do you mean no clients of the domain? Is
there AV software on the system?
I run into this problem alot, there are numerous different applications
that can be running that are looking for updates on the internet.
From a DNS aspect you could try to see if there is a name query that sets
off the dial up session. Also you want to make sure you DNS server is not
set to do AutoCacheUpdate. When this is set the DNS server will once every
24 hours go out to the ROOT servers to see if the Root Hints should be
updated. This is disabled by default.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DNS\Parameters
AutoCacheUpdate if the value does not exist then it is disabled. If does
exist then set it to 0.

Other thoughts on this, if you do have an application that is doing it, I
would suggest Enabling DNS logging and reveiwing the log in the morning,
see if there are DNS queries and to what name. Normally AV software and
other AutoUpdate type software will be do a DNS query.

Also,check the Application Event logs, you may catch the culprit in there.


Thank you,

Alan Wood[MSFT]

This posting is provided "AS IS" with no warranties, and confers no rights.
 
In
Alan Wood" said:
Hi Grazie,
When you say nothing else, do you mean no clients of the domain?
Is there AV software on the system?
I run into this problem alot, there are numerous different
applications that can be running that are looking for updates on the
internet.
From a DNS aspect you could try to see if there is a name query that
sets off the dial up session. Also you want to make sure you DNS
server is not set to do AutoCacheUpdate. When this is set the DNS
server will once every 24 hours go out to the ROOT servers to see if
the Root Hints should be updated. This is disabled by default.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DNS\Parameters
AutoCacheUpdate if the value does not exist then it is disabled. If
does exist then set it to 0.

Other thoughts on this, if you do have an application that is doing
it, I would suggest Enabling DNS logging and reveiwing the log in
the morning, see if there are DNS queries and to what name. Normally
AV software and other AutoUpdate type software will be do a DNS query.

Also,check the Application Event logs, you may catch the culprit in
there.


Thank you,

Alan Wood[MSFT]

This posting is provided "AS IS" with no warranties, and confers no
rights.
Click to expand...

Hi Alan, Kevin and Grazie

I think these articles may help in addition to your suggestions.

134985 - Browsing & Other Traffic Incur High Costs over ISDN Routers:
http://support.microsoft.com/?id=134985

265395 - Windows 2000 Member Runs Discovery Every 15 Minutes with Possible
High Dial-on-Demand Line Costs:
http://support.microsoft.com/?id=265395

Windows 2000 Server Bug - Ras always dialing out issue and eating up
bandwidth and line costs:
http://www.win2000mag.net/Articles/Index.cfm?ArticleID=22362

I would also look at what other services or apps that are running, such as
ICQ, MSN Messenger, Yahoo Messenger, Kazaa, an app running getting a
constant feed, such as for weather (WeatherBug), stocks listings, etc, or
anything else you can think of that requires access.


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
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