Re: dial on demand ... dials by itself !!
On Friday 03 January 2003 21:30, John Schmidt wrote:
> On Friday 03 January 2003 01:54 pm, Daves Debian wrote:
> > I have enabled dial on demand, it works great except sometimes
> > it dials up by itself. I assume by some program trying to access and
> > unknown ip address.
> >
> > How do I find out what programms are using my ppp link ?
> > ps ax | grep ppp
> > tells me ppp is active, but what caused it to activate and what
> > program is sending all this data ???!!!
> >
> > Many thanks for any help
> > Dave
>
> Dave,
>
> I had this problem too. I have a windows box that is connected to my
> little LAN and it was emanating a Windows "who-has" lookup about every
> 15 minutes forcing a dial-up. I discovered this by using tcpdump, e.g.
> tcpdump -vvv -i any
>
> and comparing the output of this with the logs in /var/log/syslog which
> would record the time of any dial-up.
>
> I posted this to debian-user, you can search the archives under the
> subject "finding network activity"
>
> John Schmidt
Worked out how to use tcpdump, well the basics anyhow...
Problem caused by cron scheduling exim to check for mail every 15 mins !!
Problem sorted
Many thanks
Dave
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