network and modem

  • Thread starter Thread starter C.H.
  • Start date Start date
C

C.H.

A modem on the network is always dialling out by itself and the only way to
stop it, is to switch off the computers.
What should I be looking for?

Many thanks from a novice!

Colin
 
in message : A modem on the network is always dialling out by itself and the only way
to
: stop it, is to switch off the computers.
: What should I be looking for?

Off the top of my head...

- an application
- a worm
- a root kit
- spyware

When it dials out, does it connect?

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
 
Roland Hall said:
in message : A modem on the network is always dialling out by itself and the only way
to
: stop it, is to switch off the computers.
: What should I be looking for?

Off the top of my head...

- an application
- a worm
- a root kit
- spyware

When it dials out, does it connect?

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
Click to expand...
Roland,

They say it doesn't connect to anything. Just got of the phone and she said
it seemed to happen as soon as they started to use any of the machines. When
the network is first switched on, there is no activity until someone starts
using any one of the machines. As long as anyone is using any machine the
connecting activity continues.

Regards,

Colin
 
in message :
: : > "C.H." wrote in message : > : A modem on the network is always dialling out by itself and the only
way
: > to
: > : stop it, is to switch off the computers.
: > : What should I be looking for?
: >
: > Off the top of my head...
: >
: > - an application
: > - a worm
: > - a root kit
: > - spyware
: >
: > When it dials out, does it connect?
: >
: > --
: > Roland Hall
: > /* This information is distributed in the hope that it will be useful,
but
: > without any warranty; without even the implied warranty of
merchantability
: > or fitness for a particular purpose. */
: > Online Support for IT Professionals -
: >
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
: > How-to: Windows 2000 DNS:
: > http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
: >
: >
: Roland,
:
: They say it doesn't connect to anything. Just got of the phone and she
said
: it seemed to happen as soon as they started to use any of the machines.
When
: the network is first switched on, there is no activity until someone
starts
: using any one of the machines. As long as anyone is using any machine the
: connecting activity continues.

Sounds like the person has an entry in DUN and it is set to dial on demand.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
 
You're probably right saying it's set dial-on demand. Isn't how you have to set it if you want to allow "sharing internet connection" ? That's what I've done on a small network and the modem dials every 5 seconds. And my four computers are proven to be virus free....Can you explain what's happening
 
in message
: You're probably right saying it's set dial-on demand. Isn't how you have
to set it if you want to allow "sharing internet connection" ? That's what
I've done on a small network and the modem dials every 5 seconds. And my
four computers are proven to be virus free....Can you explain what's
happening

If it's set to dial on demand, then any packet that doesn't have a target
for the local subnet will cause it to dial. This could be from an installed
service, like Windows updates, NAV LiveUpdate, browser homepage, etc.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
 
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