Re: Constant traffic on PPTP VPN Connection
- From: "John Steele" <not_real@xxxxxxxxxxxx>
- Date: 2 Jul 2005 13:19:01 -0500
Thanks.
Well, I found it. It was the Windows Time Service! I disabled this and the
problem simply stopped.
"John Steele" <not_real@xxxxxxxxxxxx> wrote in message
news:42c6d012$0$37130$bb4e3ad8@xxxxxxxxxxxxxxx
> Steve
>
> Thanks. We are not running anything that would be pushing data to the
> server, and certaily not at theat level. The other thing that is
> confusing is that it doesn't show up as network traffic in Task Manager
> and it only occurs when the VPN is up.
>
> I'll try the malware approach first and then I guess we'll have to go from
> there.
>
> John
>
>
> "Steve Duff [MVP]" <ergodic@xxxxxxxxxxxxxxxxxxx> wrote in message
> news:%23YDXbBmfFHA.272@xxxxxxxxxxxxxxxxxxxxxxx
>> If you haven't, do a malware scan on the machine. Then disable the
>> computer browser service on it.
>>
>> After this, you have two ways to diagnose the problem: you can start
>> killing processes and services until you find the culprit, or you can
>> turn up netmon or Ethereal on the server to sniff the traffic and see
>> what it is. 500MB is a lot more than just background noise from any
>> system process that a workstation would be doing, unless you are running
>> WUS or something that would be pushing a lot of updates.
>>
>> Steve Duff, MCSE, MVP
>> Ergodic Systems, Inc.
>>
>> "John Steele" <JohnSteele@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
>> news:48D41A4B-D7B5-4206-AABC-AF7FA835941D@xxxxxxxxxxxxxxxx
>>>I have several remote Windows 2000/XP Pro workstations that make
>>>"permanent"
>>> PPTP VPN connections to a VPN server in our office. All of these are
>>> configured the same way and "call" the same VPN server using PPTP.
>>>
>>> However one XP Pro machine has constant traffic on the VPN link. For
>>> example
>>> between 1AM and 1PM this machine has sent/received some 544MB over the
>>> VPN. I
>>> suspect that this is all overhead as the network usage in the XP Task
>>> Manager
>>> shows less than 1% traffic average on the VPN or the primary Internet
>>> connections. At our head office the primary router reports that some 17%
>>> of
>>> the T-1 was occupied during this period --- if we drop this VPN the T-1
>>> usage
>>> drops to an average 4-5%.
>>>
>>> We have deleted and reconfigured the remote VPN several times and the
>>> result
>>> is always the same. The XP VPN is NOT configured to use the remote (head
>>> office) gateway --- only head office traffic flows over the VPN, all
>>> other
>>> uses the direct DSL connection. The remote is not cofigured to use head
>>> office WINS servers and does not dynamically update the head office DNS.
>>>
>>> Anyone have any idea why this machine exhibits this behavior and more
>>> important how do I get rid of it.
>>
>>
>
>
.
- References:
- Constant traffic on PPTP VPN Connection
- From: John Steele
- Re: Constant traffic on PPTP VPN Connection
- From: Steve Duff [MVP]
- Re: Constant traffic on PPTP VPN Connection
- From: John Steele
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