Just some more comments on this all-too-frequent problem...
>
> On Sat, Oct 10, 1998 at 08:12:39PM +0200, Theo. Sean Schulze wrote:
>
> > Well, I've now gotten diald to connect when I want it to, but I guess I
> > need to work on keeping it from connecting when I don't want it to. It
> > seems that over the last hour or so that I have had diald up and running
> > on my system it has dialed my ISP at each quarter hour minus one minute
> > (e.g., 18:59, 19:14). Looking at the tail of /var/log/messages, I see
> > that rule 22 proto 17 seems to be the culprit. What is this rule? I
> > don't see any numbers in /usr/lib/diald/standard.filter. Where in the man
> > pages is this addressed?
>
> In my experience, seemingly unnecessary connects like this are usually caused
> by something generating a host-lookup request which generates traffic
> destined for your dns server. Something as simple as a "route" command to
> display the routing table can do this.
>
> If this is the case, you can:
>
> 1) Figure out what's doing the lookup and make it stop
This is indeed the first step. I use
tcpdump -vv -s 1024 port domain
To see who is doing what. -vv decodes more, and -s 1024 saves more
of the packet. You can also just look at the ppp link with -i ppp0,
which picks the interface. But this can get a bit confusing with
diald since some things go in/out the sl0 interface. At least I
get confused sometimes.
> 2) Add frequently requested hosts to your hosts file and make sure
> resolv.conf checks the host file first.
Plus you may have to add other local machines to \windows\hosts on
the win95 machines. This is, in typical microsoft anti-any-other
system fashon, not automated. You need to do this with edit from
a dos box.
> 3) Run a name-server daemon (it can cache addresses and prevent external
> lookups).
>
> I haven't tried 3 yet.
>
I tried once and did not succeed in the time I allocated myself.
I intend to try again.
-- cary
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