Date: Thu, 20 Nov 1997 00:16:43 +0000 From: Brian Somers <brian@awfulhak.org> To: jcondon <jcondon@computer.net> Cc: "freebsd-current@FreeBSD.ORG" <freebsd-current@freebsd.org> Subject: Re: ppp pmdemand dials when I dont want it to Message-ID: <199711200016.AAA12234@awfulhak.demon.co.uk> In-Reply-To: Your message of "Wed, 19 Nov 1997 13:33:48 EST." <3473310C.EEF454E2@computer.net>
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> Been wrestling with this for about a week. Started running 2.2.2 and
> did a fresh reinstall to 2.2.5. All seems to work fine except it dials
> and apperently does DNS lookups for apperently no reason. I have
> removed the -q option on Sendmail, and disabled Sendmail altogether.
> When I unplug the ethernet cable from the Win95 machine, or dialup via
> its own modem / DUN it doesn't cause the UNIX box to dial in. However
> when the Win95 is plugged into the ethernet and running nothing more
> then explorer and systay it will dial in with in 15 mins usually
> sooner. I did notice that if I dial in with the Win95 box and do
> NOTHING it sends about 250 bytes a min and receives about 15K. Could
> this have something to do with it?
[.....]
I think you really need to find out what's being looked up in each
case and stop each lookup at source, *or*........
I've never really used demand dialing, it simply never does what you
want it to do. I sat down and thought about it at one point, and
decided that I've basically got a network that I use personally. I
don't want arbitrary DNS lookups to trigger a dialup, and I don't
want sendmail doing a dialup as soon as I press "Send" on my mailer -
I've normally got more than one thing to send. I don't want the
machine to dialup while I'm not there *except* to do a cvsup and
exchange news & mail at some early hour of the morning. In fact, the
only time I actually want to ``demand dial'' is when I'm actually
sitting in front of the machine and think "I want a connection".
These thoughts triggered the fixing of -background mode and the birth
of pppctl. The pppctl man page essentially has examples of the
scripts I use (available from all machines on my network) to make a
connection. I run ppp in -auto mode so that there's never any
contention trying to start two at once. I have six FvwmButtons on my
desktop - "Connect 30", "Connect 60", "Connect 120", "Connect 300",
"Disconnect" and "Hangup". The "Hangup" script sends a HUP to ppp,
and the rest are invocations of the stuff in pppctl(8). Even under
M$, I have buttons that connect a telnet session to one of the
FreeBSD boxes on a specific port. Inetd runs a script that does the
"connect 300" or whatever. The script exits and the M$ box loses the
connection. Of course I had to install some third party freeware
telnet implemenation 'cos the M$ one starts stuffing dialogue boxes
in your face when the connection drops :-|
So, every machine I sit in front of (or switch to) has a set of
connect/disconnect buttons or scripts, and ppp doesn't do *any*
unwanted dialing !
Perhaps I ought to ramble on about this in the FAQ :-)
> Thanks for any insight you could provide.
>
> Jim Condon
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <bri@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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